CVE Patch Review: cert-manager CVE-2025-11065 [MEDIUM]

[Copilot]

Merge Checklist

All boxes should be checked before merging the PR (just tick any boxes which don't apply to this PR)

• The toolchain has been rebuilt successfully (or no changes were made to it)
• The toolchain/worker package manifests are up-to-date
• Any updated packages successfully build (or no packages were changed)
• Packages depending on static components modified in this PR (Golang, *-static subpackages, etc.) have had their Release tag incremented.
• Package tests (%check section) have been verified with RUN_CHECK=y for existing SPEC files, or added to new SPEC files
• All package sources are available
• cgmanifest files are up-to-date and sorted (./cgmanifest.json, ./toolkit/scripts/toolchain/cgmanifest.json, .github/workflows/cgmanifest.json)
• LICENSE-MAP files are up-to-date (./LICENSES-AND-NOTICES/SPECS/data/licenses.json, ./LICENSES-AND-NOTICES/SPECS/LICENSES-MAP.md, ./LICENSES-AND-NOTICES/SPECS/LICENSE-EXCEPTIONS.PHOTON)
• All source files have up-to-date hashes in the *.signatures.json files
• sudo make go-tidy-all and sudo make go-test-coverage pass
• Documentation has been updated to match any changes to the build system
• Ready to merge

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Summary

Review of PR #15689 - CVE patch for cert-manager addressing error message leaks in vendored mapstructure library.

Review Findings:

Item	Status
Patch entry (Patch20)	✅
Release bump (25→26)	✅
Changelog entry	✅
Upstream reference	✅
Backport correctness	✅

Upstream patch has been backported manually. Vendor codebase lacks newer APIs (StringToURLHookFunc, StringToNetIPAddrHookFunc, etc.) present in upstream. Backport verified against upstream commit.

Change Log

• Reviewed spec file changes: patch declaration, release bump, changelog
• Verified patch against upstream commit
• Confirmed backport is functionally equivalent to upstream fix
• Reviewed build status

Does this affect the toolchain?

NO

Links to CVEs

• https://nvd.nist.gov/vuln/detail/CVE-2025-11065

Test Methodology

• Buddy Build: Build 1042929

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• nvd.nist.gov
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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