CVE-2026-25542
Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. From 0.43.0 to 1.11.0, 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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.5
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- EPSS probability
- 0.26%
- CWE
- CWE-185
- Published
- 2026-04-21
- Last modified
- 2026-05-22
Affected products
- tektoncd pipeline
- tektoncd pipeline
- tektoncd pipeline
- tektoncd pipeline
- tektoncd pipeline
- tektoncd pipeline
Weakness type
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