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[Aikido] Fix 33 security issues in fast-xml-parser, fast-uri, brace-expansion and 6 more - #53

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[Aikido] Fix 33 security issues in fast-xml-parser, fast-uri, brace-expansion and 6 more#53
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@aikido-autofix aikido-autofix Bot commented Aug 4, 2026

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Upgrade dependencies to fix critical XSS via XML entity shadowing, XML entity expansion DoS attacks, stack overflow in XML builder, SSRF bypass via URI parsing inconsistency, and other security vulnerabilities.

⚠️ Breaking changes analysis not available for: aws-cdk-lib, minimatch, ajv

✅ No breaking changes for: fast-xml-parser, fast-uri, brace-expansion, yaml, @smithy/config-resolver, fs-extra

✅ 33 CVEs resolved by this upgrade, including 1 critical 🚨 CVE

This PR will resolve the following CVEs:

Issue Severity           Description
CVE-2026-25896
🚨 CRITICAL
[fast-xml-parser] A dot (.) in DOCTYPE entity names is treated as a regex wildcard, allowing attackers to shadow built-in XML entities with arbitrary values and bypass entity encoding. This leads to XSS when parsed output is rendered.
CVE-2026-26278
HIGH
[fast-xml-parser] XML entity expansion vulnerability allows attackers to cause denial of service by forcing unlimited entity expansion with minimal input, potentially freezing the application for extended periods.
CVE-2026-27942
HIGH
[fast-xml-parser] XML builder with preserveOrder:true causes stack overflow leading to denial of service when processing certain inputs. The application crashes due to improper recursion handling during XML construction.
CVE-2026-33036
HIGH
[fast-xml-parser] Numeric character references and standard XML entities bypass entity expansion limits, allowing attackers to cause XML entity expansion Denial of Service by forcing excessive memory allocation and CPU usage through crafted XML payloads.
CVE-2026-33349
MEDIUM
[fast-xml-parser] XML entity expansion vulnerability where setting maxEntityCount or maxEntitySize to 0 is bypassed due to JavaScript falsy checks, allowing attackers to cause denial of service through memory exhaustion. The vulnerability affects configurations explicitly set to restrict or disable entities.
AIKIDO-2026-878106
HIGH
[fast-uri] URI authority parsing fails to treat backslashes as delimiters, allowing different host interpretations compared to Node's WHATWG URL parser, enabling bypass of host allowlists, SSRF filters, and redirect validation checks. The vulnerability permits attackers to circumvent security controls through crafted URIs containing backslashes.
AIKIDO-2026-10784
HIGH
[fast-uri] A path normalization vulnerability allows attackers to bypass security checks by using percent-encoded slashes and dots that are decoded before dot-segment removal, causing distinct URIs to normalize identically and compare equal.
CVE-2026-6321
HIGH
[fast-uri] A vulnerability in URI normalization allows attackers to bypass path-based access controls by using percent-encoded separators and dot segments that normalize to unintended paths. This enables policy bypass attacks where restricted paths can be accessed through specially crafted encoded URLs.
CVE-2026-6322
HIGH
[fast-uri] Normalize function improperly decodes percent-encoded authority delimiters in the host component, re-emitting them as raw delimiters during serialization. This allows attackers to bypass host allowlist checks and redirect requests to unintended authorities.
AIKIDO-2026-507986
HIGH
[fast-uri] A security bypass vulnerability exists in host canonicalization for Unicode/IDN values due to inconsistent ASCII/Unicode host handling, which could allow attackers to bypass security checks through improper host normalization.
CVE-2026-13676
HIGH
[fast-uri] A vulnerability in IDN hostname canonicalization allows Unicode hostnames to bypass host-based security policies (denylists, loopback filtering, redirects) when fast-uri's output differs from standard URL parsers. This enables attackers to circumvent security controls that rely on host validation.
CVE-2026-16221
HIGH
[fast-uri] A parsing discrepancy in fast-uri allows backslash characters to bypass host-based security policies like allowlists and SSRF filters, enabling attackers to redirect requests to unintended destinations including internal hosts and cloud metadata endpoints.
AIKIDO-2026-236835
HIGH
[fast-uri] A parsing discrepancy allows attackers to bypass host allowlists and SSRF filters by using alternative authority introducers (backslashes, mixed slashes, whitespace) that fast-uri treats as paths but Node's URL parser treats as authority, enabling redirection to unintended destinations.
CVE-2026-18446
HIGH
[fast-uri] URI parsing inconsistency allows attackers to bypass host-based security policies by using backslashes instead of forward slashes, causing fast-uri to parse differently than Node's URL parser and potentially enabling SSRF attacks or unintended redirects.
CVE-2026-14257
HIGH
[brace-expansion] Denial of service via memory exhaustion when expand() processes chained brace groups, allowing attackers to crash applications with small inputs by generating progressively longer result strings that exceed memory limits.
AIKIDO-2026-872981
HIGH
[brace-expansion] A vulnerability in the expand() function allows unbounded intermediate array generation during brace expansion, enabling a small crafted input to exhaust process memory or cause denial of service through event loop blocking.
CVE-2026-69152
HIGH
[brace-expansion] A memory exhaustion and event loop blocking vulnerability exists in the expand() function when processing attacker-controlled input with comma-alternatives or padded sequences, bypassing previous DoS protections.
AIKIDO-2026-237551
MEDIUM
[brace-expansion] A recursive expansion function computes unnecessary segments before early returns, causing exponential time complexity when processing consecutive non-expanding brace groups, enabling denial-of-service attacks through short malicious inputs that can stall processes or workers.
CVE-2026-13149
MEDIUM
[brace-expansion] A denial of service vulnerability exists in the expand() function due to exponential-time complexity when processing consecutive non-expanding brace groups, allowing attackers to cause significant CPU consumption and event-loop blocking.
CVE-2026-33750
LOW
[brace-expansion] A brace pattern with zero step value causes an infinite loop, leading to denial of service through process hangs and excessive memory allocation. The vulnerability affects string expansion operations when malicious or malformed patterns are processed.
AIKIDO-2026-10477
LOW
[brace-expansion] A denial-of-service vulnerability allows attackers to craft malicious brace patterns with repeated numeric ranges that cause exponential expansion, consuming excessive CPU and memory until process failure. The fix introduces an optional maximum limit parameter to bound expansion work.
CVE-2026-11417
HIGH
[aws-cdk-lib] OS command injection vulnerability in NodejsFunction local bundling pipeline allows arbitrary command execution if an attacker controls bundling properties like externalModules, define, loader, inject, or esbuildArgs through shell metacharacters injection.
AIKIDO-2026-577363
HIGH
[aws-cdk-lib] OS command injection vulnerability in Docker-based NodejsFunction bundling when using the nodeModules option allows attackers to inject shell commands through dependency version strings, leading to arbitrary code execution with the privileges of the CDK toolchain user.
CVE-2026-13760
HIGH
[aws-cdk-lib] OS command injection vulnerability in NodejsFunction Docker bundling allows attackers controlling package.json dependency versions to execute arbitrary commands on the host via shell metacharacters in the OsCommand helper.
GHSA-464c-974j-9xm6
LOW
[aws-cdk-lib] A logic inversion vulnerability in S3LoggingOptions causes the encrypted property to produce opposite behavior, disabling encryption when set to true instead of enabling it, potentially leaving CodeBuild logs unencrypted. This is an information disclosure risk affecting logs that may lack encryption at rest.
CVE-2026-33532
MEDIUM
[yaml] A stack overflow vulnerability in the YAML parser's node resolution phase allows attackers to trigger a RangeError via deeply nested YAML structures (~2-10 KB), potentially causing denial of service or process termination in applications that don't catch non-YAMLParseError exceptions.
CVE-2026-26996
LOW
[minimatch] A Regular Expression Denial of Service (ReDoS) vulnerability exists when glob patterns contain many consecutive * wildcards followed by a literal character, causing exponential backtracking with O(4^N) complexity. Applications passing user-controlled strings as patterns to minimatch() are vulnerable to severe performance degradation or hangs.
CVE-2026-27903
LOW
[minimatch] A ReDoS vulnerability in glob pattern matching causes unbounded recursive backtracking with multiple GLOBSTAR segments, enabling attackers to stall the event loop for tens of seconds via crafted patterns in build tools, CI/CD pipelines, or multi-tenant systems.
CVE-2026-27904
LOW
[minimatch] Nested extglobs (*() and +()) generate regexps with catastrophic backtracking, causing severe ReDoS denial-of-service attacks with minimal input patterns triggering multi-second hangs.
GHSA-6475-r3vj-m8vf
LOW
[@smithy/config-resolver] An attacker with environment access could set an invalid region value, potentially routing AWS API calls to non-AWS hosts. A validation enhancement was added to prevent improper endpoint construction through region input validation.
CVE-2025-69873
LOW
[ajv] A ReDoS vulnerability allows attackers to inject malicious regex patterns via the $data option, causing catastrophic backtracking and CPU exhaustion. A 31-character payload can block execution for ~44 seconds, enabling complete denial of service with minimal effort.
AIKIDO-2026-273849
LOW
[ajv] A prototype pollution vulnerability allows attackers to bypass format validation when the $data option is enabled by using inherited property names like constructor or toString as format values, causing unexpected validation behavior or errors.
AIKIDO-2026-57045
LOW
[fs-extra] A symlink in the destination path allows bypassing self-subdirectory protection, causing copy/move operations to recurse infinitely into the source tree until resource exhaustion or path length limits are exceeded (DoS).
🤖 Remediation details

Fix security vulnerabilities in fast-xml-parser, fast-uri, brace-expansion, aws-cdk-lib, yaml, minimatch, @smithy/config-resolver, ajv, and fs-extra

Short summary

This PR remediates security vulnerabilities in nine npm packages: fast-xml-parser, fast-uri, brace-expansion, aws-cdk-lib, yaml, minimatch, @smithy/config-resolver, ajv, and fs-extra. The fixes are applied via three direct-dependency version bumps in the root package.json (aws-cdk-lib, @aws-sdk/client-secrets-manager, @aws-sdk/credential-providers) plus lockfile-only transitive refreshes for minimatch, brace-expansion, and ajv, all reflected in package-lock.json.


fast-xml-parser

Previously resolved at 4.4.1 as a transitive dependency of @aws-sdk/core, which exact-pinned it. Bumping @aws-sdk/client-secrets-manager from ^3.348.0 to ^3.844.0 in package.json caused @aws-sdk/core to resolve at 3.844.0, which declares fast-xml-parser@5.2.5 — a version satisfying the ≥4.5.5 patched floor. After the lockfile refresh, fast-xml-parser no longer appears as a standalone resolved instance in the tree.

fast-uri

Previously resolved at 3.0.6 as a transitive dependency of the ajv@8.x copy bundled inside aws-cdk-lib. Bumping aws-cdk-lib from ^2.78.0 to ^2.260.0 in package.json resolved aws-cdk-lib@2.263.0, which no longer carries a separately hoisted fast-uri instance — the vulnerability is eliminated by the parent upgrade.

brace-expansion

Three instances existed: a root instance at 1.1.12 (via minimatch@3.1.2), a filelist-nested instance at 2.0.2 (via minimatch@5.1.6), and an aws-cdk-lib-bundled instance at 5.0.8 (via minimatch@10.2.5). The root and filelist instances were fixed by running npm update brace-expansion minimatch --package-lock-only, which refreshed the lockfile to 1.1.18 and 2.1.4 respectively — both parents already declared compatible caret ranges. The aws-cdk-lib-bundled 5.0.8 instance is inBundle: true inside aws-cdk-lib@2.263.0 (the latest available release) and cannot be updated independently; it will be resolved when a future aws-cdk-lib release bundles brace-expansion@≥5.0.9.

aws-cdk-lib

A direct dependency, bumped from ^2.78.0 to ^2.260.0 in package.json, resolving to 2.263.0 in the lockfile. This was necessary both to address vulnerabilities in aws-cdk-lib itself and to pull in patched versions of several transitive dependencies it owns (fast-uri, yaml, fs-extra, minimatch, ajv@8.x).

yaml

Previously resolved at 1.10.2 as a bundled transitive inside aws-cdk-lib. Bumping aws-cdk-lib to ^2.260.0 resolved aws-cdk-lib@2.263.0, which declares yaml@1.10.3, satisfying the ≥1.10.3 patched floor.

minimatch

Three instances existed: a root instance at 3.1.2 (shared by eslint and other dev tooling), a filelist-nested instance at 5.1.6, and an aws-cdk-lib-nested instance at 3.1.2. The aws-cdk-lib bump resolved its nested copy to 10.2.5. The root and filelist instances were refreshed to 3.1.5 and 5.1.9 respectively via npm update minimatch --package-lock-only — all declaring parents already allowed the patched versions under their caret ranges.

@smithy/config-resolver

Previously resolved at 4.1.4 as a transitive of @aws-sdk/client-secrets-manager and related AWS SDK packages. Bumping @aws-sdk/client-secrets-manager to ^3.844.0 resolved the SDK suite to 3.1101.0, which satisfies the ≥4.4.0 patched floor. After the lockfile refresh, @smithy/config-resolver no longer appears as a standalone resolved instance.

ajv

Two instances existed: a root 6.12.6 copy (used by eslint@8.57.1) and an aws-cdk-lib-nested 8.17.1 copy. The aws-cdk-lib bump eliminated the nested 8.x instance. The root 6.x instance was refreshed to 6.15.0 via npm update ajv --package-lock-onlyeslint@8.57.1 already declares ajv@^6.12.4, which permits 6.15.0.

fs-extra

Previously resolved at 11.3.0 as a transitive inside aws-cdk-lib. Bumping aws-cdk-lib to ^2.260.0 resolved aws-cdk-lib@2.263.0, which declares fs-extra@^11.3.6, satisfying the ≥11.3.6 patched floor.


Version changes

Package From To Why updated
aws-cdk-lib ^2.78.02.204.0 resolved ^2.260.02.263.0 resolved Direct CVE fix; also drives transitive fixes for fast-uri, yaml, fs-extra, minimatch, ajv
@aws-sdk/client-secrets-manager ^3.348.03.840.0 resolved ^3.844.03.1101.0 resolved Parent bump to fix fast-xml-parser and @smithy/config-resolver transitives
@aws-sdk/credential-providers ^3.348.03.840.0 resolved ^3.844.03.1101.0 resolved Aligned with client-secrets-manager bump (shared AWS SDK version group)
fast-xml-parser 4.4.1 no longer resolved (removed) Transitive after parent bump (@aws-sdk/client-secrets-manager → @aws-sdk/core)
fast-uri 3.0.6 no longer resolved (removed) Transitive after parent bump (aws-cdk-lib)
@smithy/config-resolver 4.1.4 no longer resolved (removed) Transitive after parent bump (@aws-sdk/client-secrets-manager)
yaml (aws-cdk-lib nested) 1.10.2 1.10.3 Transitive after parent bump (aws-cdk-lib)
fs-extra (aws-cdk-lib nested) 11.3.0 11.3.6 Transitive after parent bump (aws-cdk-lib)
minimatch (aws-cdk-lib nested) 3.1.2 10.2.5 Transitive after parent bump (aws-cdk-lib)
minimatch (root) 3.1.2 3.1.5 Lockfile refresh; semver resolution under eslint ^3.1.2
minimatch (filelist nested) 5.1.6 5.1.9 Lockfile refresh; semver resolution under filelist ^5.0.1
brace-expansion (root) 1.1.12 1.1.18 Lockfile refresh; semver resolution under minimatch ^1.1.7
brace-expansion (filelist nested) 2.0.2 2.1.4 Lockfile refresh; semver resolution under minimatch ^2.0.1
ajv (root) 6.12.6 6.15.0 Lockfile refresh; semver resolution under eslint ^6.12.4
ajv (aws-cdk-lib nested) 8.17.1 no longer resolved (removed) Transitive after parent bump (aws-cdk-lib)

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github-actions Bot commented Aug 4, 2026

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Package lock diff

 2.4.1 -> 2.6.1
node_modules/@aws-cdk/asset-awscli-v1 2.2.242 -> 2.2.282
node_modules/@aws-cdk/asset-node-proxy-agent-v6 2.1.0 -> 2.1.2
node_modules/@aws-cdk/cloud-assembly-schema 45.2.0 -> 54.15.0
node_modules/@aws-cdk/cloud-assembly-schema/node_modules/jsonschema 1.4.1 -> 1.5.0
node_modules/@aws-cdk/cloud-assembly-schema/node_modules/semver 7.7.2 -> 7.8.5
node_modules/@aws-crypto/sha256-browser removed
node_modules/@aws-crypto/sha256-browser/node_modules/@smithy/is-array-buffer removed
node_modules/@aws-crypto/sha256-browser/node_modules/@smithy/util-buffer-from removed
node_modules/@aws-crypto/sha256-browser/node_modules/@smithy/util-utf8 removed
node_modules/@aws-crypto/sha256-js removed
node_modules/@aws-crypto/supports-web-crypto removed
node_modules/@aws-crypto/util removed
node_modules/@aws-crypto/util/node_modules/@smithy/is-array-buffer removed
node_modules/@aws-crypto/util/node_modules/@smithy/util-buffer-from removed
node_modules/@aws-crypto/util/node_modules/@smithy/util-utf8 removed
node_modules/@aws-sdk/client-cognito-identity removed
node_modules/@aws-sdk/client-secrets-manager 3.840.0 -> 3.1101.0
node_modules/@aws-sdk/client-sso removed
node_modules/@aws-sdk/core 3.840.0 -> 3.977.4
node_modules/@aws-sdk/credential-provider-cognito-identity 3.840.0 -> 3.972.64
node_modules/@aws-sdk/credential-provider-env 3.840.0 -> 3.972.65
node_modules/@aws-sdk/credential-provider-http 3.840.0 -> 3.972.67
node_modules/@aws-sdk/credential-provider-ini 3.840.0 -> 3.973.10
node_modules/@aws-sdk/credential-provider-node 3.840.0 -> 3.972.76
node_modules/@aws-sdk/credential-provider-process 3.840.0 -> 3.972.65
node_modules/@aws-sdk/credential-provider-sso 3.840.0 -> 3.973.9
node_modules/@aws-sdk/credential-provider-web-identity 3.840.0 -> 3.972.71
node_modules/@aws-sdk/credential-providers 3.840.0 -> 3.1101.0
node_modules/@aws-sdk/middleware-host-header removed
node_modules/@aws-sdk/middleware-logger removed
node_modules/@aws-sdk/middleware-recursion-detection removed
node_modules/@aws-sdk/middleware-user-agent removed
node_modules/@aws-sdk/nested-clients 3.840.0 -> 3.997.39
node_modules/@aws-sdk/region-config-resolver removed
node_modules/@aws-sdk/token-providers 3.840.0 -> 3.1100.0
node_modules/@aws-sdk/types 3.840.0 -> 3.974.2
node_modules/@aws-sdk/util-endpoints removed
node_modules/@aws-sdk/util-locate-window removed
node_modules/@aws-sdk/util-user-agent-browser removed
node_modules/@aws-sdk/util-user-agent-node removed
node_modules/@aws-sdk/xml-builder 3.821.0 -> 3.972.37
node_modules/@smithy/abort-controller removed
node_modules/@smithy/config-resolver removed
node_modules/@smithy/core 3.6.0 -> 3.31.1
node_modules/@smithy/credential-provider-imds 4.0.6 -> 4.4.16
node_modules/@smithy/fetch-http-handler 5.0.4 -> 5.6.13
node_modules/@smithy/hash-node removed
node_modules/@smithy/invalid-dependency removed
node_modules/@smithy/is-array-buffer removed
node_modules/@smithy/middleware-content-length removed
node_modules/@smithy/middleware-endpoint removed
node_modules/@smithy/middleware-retry removed
node_modules/@smithy/middleware-serde removed
node_modules/@smithy/middleware-stack removed
node_modules/@smithy/node-config-provider removed
node_modules/@smithy/node-http-handler 4.0.6 -> 4.9.13
node_modules/@smithy/property-provider removed
node_modules/@smithy/protocol-http removed
node_modules/@smithy/querystring-builder removed
node_modules/@smithy/querystring-parser removed
node_modules/@smithy/service-error-classification removed
node_modules/@smithy/shared-ini-file-loader removed
node_modules/@smithy/signature-v4 5.1.2 -> 5.6.12
node_modules/@smithy/smithy-client removed
node_modules/@smithy/types 4.3.1 -> 4.16.1
node_modules/@smithy/url-parser removed
node_modules/@smithy/util-base64 removed
node_modules/@smithy/util-body-length-browser removed
node_modules/@smithy/util-body-length-node removed
node_modules/@smithy/util-buffer-from removed
node_modules/@smithy/util-config-provider removed
node_modules/@smithy/util-defaults-mode-browser removed
node_modules/@smithy/util-defaults-mode-node removed
node_modules/@smithy/util-endpoints removed
node_modules/@smithy/util-hex-encoding removed
node_modules/@smithy/util-middleware removed
node_modules/@smithy/util-retry removed
node_modules/@smithy/util-stream removed
node_modules/@smithy/util-uri-escape removed
node_modules/@smithy/util-utf8 removed
node_modules/@types/uuid removed
node_modules/ajv 6.12.6 -> 6.15.0
node_modules/aws-cdk-lib 2.204.0 -> 2.263.0
node_modules/aws-cdk-lib/node_modules/ajv removed
node_modules/aws-cdk-lib/node_modules/ansi-regex removed
node_modules/aws-cdk-lib/node_modules/ansi-styles removed
node_modules/aws-cdk-lib/node_modules/astral-regex removed
node_modules/aws-cdk-lib/node_modules/balanced-match 1.0.2 -> 4.0.4
node_modules/aws-cdk-lib/node_modules/brace-expansion 1.1.12 -> 5.0.8
node_modules/aws-cdk-lib/node_modules/color-convert removed
node_modules/aws-cdk-lib/node_modules/color-name removed
node_modules/aws-cdk-lib/node_modules/concat-map removed
node_modules/aws-cdk-lib/node_modules/emoji-regex removed
node_modules/aws-cdk-lib/node_modules/fast-deep-equal removed
node_modules/aws-cdk-lib/node_modules/fast-uri removed
node_modules/aws-cdk-lib/node_modules/fs-extra 11.3.0 -> 11.3.6
node_modules/aws-cdk-lib/node_modules/is-fullwidth-code-point removed
node_modules/aws-cdk-lib/node_modules/json-schema-traverse removed
node_modules/aws-cdk-lib/node_modules/jsonfile 6.1.0 -> 6.2.1
node_modules/aws-cdk-lib/node_modules/lodash.truncate removed
node_modules/aws-cdk-lib/node_modules/minimatch 3.1.2 -> 10.2.5
node_modules/aws-cdk-lib/node_modules/require-from-string removed
node_modules/aws-cdk-lib/node_modules/semver 7.7.2 -> 7.8.5
node_modules/aws-cdk-lib/node_modules/slice-ansi removed
node_modules/aws-cdk-lib/node_modules/string-width removed
node_modules/aws-cdk-lib/node_modules/strip-ansi removed
node_modules/aws-cdk-lib/node_modules/table removed
node_modules/aws-cdk-lib/node_modules/yaml 1.10.2 -> 1.10.3
node_modules/bowser 2.11.0 -> 2.14.1
node_modules/brace-expansion 1.1.12 -> 1.1.18
node_modules/constructs 10.4.2 -> 10.7.2
node_modules/fast-xml-parser removed
node_modules/filelist/node_modules/brace-expansion 2.0.2 -> 2.1.4
node_modules/filelist/node_modules/minimatch 5.1.6 -> 5.1.9
node_modules/minimatch 3.1.2 -> 3.1.5
node_modules/strnum removed
node_modules/uuid removed
node_modules/@aws-sdk/credential-provider-login added
node_modules/@aws-sdk/signature-v4-multi-region added
node_modules/@aws/lambda-invoke-store added
node_modules/aws-cdk-lib/node_modules/@aws-cdk/cloud-assembly-api added
node_modules/aws-cdk-lib/node_modules/@aws/cloudformation-validate added

@aikido-autofix

aikido-autofix Bot commented Aug 7, 2026

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Closed by Aikido: a new AutoFix has been created → #54

@aikido-autofix aikido-autofix Bot closed this Aug 7, 2026
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aikido-autofix Bot deleted the fix/aikido-security-update-packages-81267167-ie3g branch August 7, 2026 00:21
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