[Project Darkstar] ROSAENG-61595: Remediate CVE-2026-15308 in managed-scripts

[kseiter-rh]

Project Darkstar — Automated CVE Remediation

This PR was generated by Project Darkstar, an automated CVE remediation tool.
For questions or concerns, contact Kevin Seiter (ROSA Trust Engineering).

Summary

• Fixes CVE-2026-15308 (Important, CVSS 7.5) — Python CPU DoS in html.parser
• Updates UBI8 base image from 8.10-1779891713 to 8.10-1781720109 in both Dockerfile stages
• Aligns Dockerfile with the tag already used in .tekton/pr-check-pipeline.yaml

CVE Details

• CVE: CVE-2026-15308
• Severity: Important (CVSS 7.5)
• CWE: CWE-835 (Uncontrolled Loop / Infinite Loop)
• Description: Python's html.parser.HTMLParser allows CPU denial-of-service via repeated unterminated markup declarations in uncontrolled input.
• Fix: Red Hat backported the fix to python3.11 (RHSA-2026:38017/38018). Updating the UBI8 base image tag triggers a rebuild that pulls the patched python3.11 RPM from Red Hat's online repos.

CVEs Analyzed But Not Auto-Fixed (require action outside this repo)

CVE	Severity	Component	Reason
CVE-2026-44740	Important (7.5)	go-billy v5	Transitive dep in hypershift — fix in openshift/hypershift go.mod
CVE-2026-53492	Important (8.2)	containerd CRI plugin	Runtime-level — update containerd at cluster/node level
CVE-2026-53488	Important (8.8)	containerd CRI plugin	Runtime-level — update containerd at cluster/node level
CVE-2026-42306	Important (7.2)	Moby/Docker Engine	Runtime-level — update Docker Engine to 29.5.1

Changes

• Dockerfile: Updated both FROM lines from ubi8/ubi:8.10-1779891713 to ubi8/ubi:8.10-1781720109

Verification

• CI/CD pipeline (make build) passes with new base image
• No regressions in existing script validation
• New base image tag is on the same 8.10 major.minor stream

References

• Jira: ROSAENG-61595
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15308
• RHSA: https://access.redhat.com/errata/RHSA-2026:38017

---

Project Darkstar — Automated CVE Remediation | Contact: Kevin Seiter (ROSA Trust Engineering)

[openshift-ci-robot]

@kseiter-rh: This pull request references ROSAENG-61595 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the vulnerability to target the "5.0.0" version, but no target version was set.

Details

In response to this:

Project Darkstar — Automated CVE Remediation

This PR was generated by Project Darkstar, an automated CVE remediation tool.
For questions or concerns, contact Kevin Seiter (ROSA Trust Engineering).

Summary

• Fixes CVE-2026-15308 (Important, CVSS 7.5) — Python CPU DoS in html.parser
• Updates UBI8 base image from 8.10-1779891713 to 8.10-1781720109 in both Dockerfile stages
• Aligns Dockerfile with the tag already used in .tekton/pr-check-pipeline.yaml

CVE Details

• CVE: CVE-2026-15308
• Severity: Important (CVSS 7.5)
• CWE: CWE-835 (Uncontrolled Loop / Infinite Loop)
• Description: Python's html.parser.HTMLParser allows CPU denial-of-service via repeated unterminated markup declarations in uncontrolled input.
• Fix: Red Hat backported the fix to python3.11 (RHSA-2026:38017/38018). Updating the UBI8 base image tag triggers a rebuild that pulls the patched python3.11 RPM from Red Hat's online repos.

CVEs Analyzed But Not Auto-Fixed (require action outside this repo)

CVE	Severity	Component	Reason
CVE-2026-44740	Important (7.5)	go-billy v5	Transitive dep in hypershift — fix in openshift/hypershift go.mod
CVE-2026-53492	Important (8.2)	containerd CRI plugin	Runtime-level — update containerd at cluster/node level
CVE-2026-53488	Important (8.8)	containerd CRI plugin	Runtime-level — update containerd at cluster/node level
CVE-2026-42306	Important (7.2)	Moby/Docker Engine	Runtime-level — update Docker Engine to 29.5.1

Changes

• Dockerfile: Updated both FROM lines from ubi8/ubi:8.10-1779891713 to ubi8/ubi:8.10-1781720109

Verification

• CI/CD pipeline (make build) passes with new base image
• No regressions in existing script validation
• New base image tag is on the same 8.10 major.minor stream

References

• Jira: ROSAENG-61595
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15308
• RHSA: https://access.redhat.com/errata/RHSA-2026:38017

---

Project Darkstar — Automated CVE Remediation | Contact: Kevin Seiter (ROSA Trust Engineering)

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