CVE-2026-25542
Medium · 6.5CVSS
6.5
EPSS
0.4%
Published
Apr 21, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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