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 3.1
- 6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-26)
- CWE
- CWE-185
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linuxfoundation:tekton_pipelines
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-rmx9-2pp3-xhcr | Go | github.com/tektoncd/pipeline | >=0.43.0 <1.0.2 | 1.0.2 |
| GHSA-rmx9-2pp3-xhcr | Go | github.com/tektoncd/pipeline | >=1.2.0 <1.3.4 | 1.3.4 |
| GHSA-rmx9-2pp3-xhcr | Go | github.com/tektoncd/pipeline | >=1.4.0 <1.6.2 | 1.6.2 |
| GHSA-rmx9-2pp3-xhcr | Go | github.com/tektoncd/pipeline | >=1.7.0 <1.9.3 | 1.9.3 |
| GHSA-rmx9-2pp3-xhcr | Go | github.com/tektoncd/pipeline | >=1.10.0 <1.11.1 | 1.11.1 |
| GO-2026-5630 | Go | github.com/tektoncd/pipeline | >=0.43.0 <1.0.2 >=1.1.0 <1.3.4 >=1.4.0 <1.6.2 >=1.7.0 <1.9.3 >=1.10.0 <1.11.1 | 1.0.2, 1.3.4, 1.6.2, 1.9.3, 1.11.1 |