Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 0.43.0 and prior to versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1, trusted resources verification policies match a resource source string (refSource.URI) against spec.resources[].pattern using regexp.MatchString. In Go, regexp.MatchString reports a match if the pattern matches anywhere in the string, so common unanchored patterns (including examples in tekton documentation) can be bypassed by attacker-controlled source strings that contain the trusted pattern as a substring. This can cause an unintended policy match and change which verification mode/keys apply. Versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1 fix the issue.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/tektoncd/pipeline/commit/b8905600322aa86327baae0a7c04d6cf1207362a Patch
- https://github.com/tektoncd/pipeline/security/advisories/GHSA-rmx9-2pp3-xhcr Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.5 · linuxfoundationNVD modified 2026-10-26 22:10
Affected (CPE criteria) 1
cpe:2.3:a:linuxfoundation:tekton_pipelines:*:*:*:*:*:go:*:*