CVE-2026-25542
Description
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.
How to fix
- linuxfoundation tekton_pipelines1.11.0 or later
- github.com/tektoncd/pipeline1.0.2, 1.3.4, 1.6.2, 1.9.3, 1.11.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linuxfoundation tekton_pipelines | 0.43.0 ≤ v < 1.11.0 | 1.11.0 |
| github.com/tektoncd/pipelineGo | 0.43.0 ≤ v < 1.0.2, 1.2.0 ≤ v < 1.3.4, 1.4.0 ≤ v < 1.6.2, 1.7.0 ≤ v < 1.9.3, 1.10.0 ≤ v < 1.11.1, 1.1.0 ≤ v < 1.3.4 | 1.0.2, 1.3.4, 1.6.2, 1.9.3, 1.11.1 |
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