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CVE-2026-25542

6.5 MEDIUM

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines

Published: 2026-04-21 · Last updated: 2026-05-01

Severity and scoring

CVSS
6.5 MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CWE
CWE-185

Affected products

VendorProduct
linuxfoundationtekton_pipelines

Description

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.

Source: NVD

References

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