PT-2026-34001 · Unknown · Tekton Pipelines

1Seal + 1 · Published 2026-04-21 · Updated 2026-05-22 · CVE-2026-25542

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Tekton Pipelines versions 0.43.0 through 1.11.0

Description Trusted resources verification policies match a resource source string refSource.URI against spec.resources[].pattern using the regexp.MatchString function. Because this function reports a match if the pattern is found anywhere in the string, unanchored patterns can be bypassed by attacker-controlled source strings that contain the trusted pattern as a substring. This may lead to an unintended policy match and alter the applicable verification modes or keys.

Recommendations Update Tekton Pipelines to a version later than 1.11.0.

Fix

Weakness Enumeration

CWE-185

Related Identifiers

CVE-2026-25542

GHSA-RMX9-2PP3-XHCR

Affected Products

Tekton Pipelines

References · 10

• https://github.com/tektoncd/pipeline/security/advisories/GHSA-rmx9-2pp3-xhcr · Vendor Advisory
• https://github.com/tektoncd/pipeline/commit/b8905600322aa86327baae0a7c04d6cf1207362a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-25542 · Security Note
• https://osv.dev/vulnerability/GHSA-rmx9-2pp3-xhcr · Vendor Advisory
• https://github.com/tektoncd/pipeline/releases/tag/v1.11.0 · Note
• https://github.com/tektoncd/pipeline/commit/2c398711e6e9e232180508f0648425a8ea34dc9e · Note
• https://github.com/tektoncd/pipeline · Note
• https://twitter.com/infoflowcloud/status/2046637668830785638 · Twitter Post
• https://twitter.com/CVEnew/status/2046636257770397773 · Twitter Post
• https://t.me/cveNotify/164623 · Telegram Post