CVE-2026-25542

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/tektoncd/pipeline/commit/b8905600322aa86327baae0a7c04d6cf1207362a	Patch
https://github.com/tektoncd/pipeline/security/advisories/GHSA-rmx9-2pp3-xhcr	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:linuxfoundation:tekton_pipelines:*:*:*:*:*:go:*:*

History

No history.

Information

Published : 2026-04-21 17:16

Updated : 2026-06-17 10:24

NVD link : CVE-2026-25542

Mitre link : CVE-2026-25542

CVE.ORG link : CVE-2026-25542

JSON object : View

Products Affected

linuxfoundation

tekton_pipelines

CWE

CWE-185

Incorrect Regular Expression

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