CVE-2026-40938
Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 1.0.0 and prior to versions 1
CVSS
7.5
Alto
EPSS
0.8%
p52
KEV
—
Exploit Today
16
0-100
Publicado: 21 abr 2026 · Última mod.: 15 jul 2026 · CWE-88
Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 1.0.0 and prior to versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1, the git resolver's revision parameter is passed directly as a positional argument to git fetch without any validation that it does not begin with a - character. Because git parses flags from mixed positional arguments, an attacker can inject arbitrary git fetch flags such as --upload-pack=<binary>. Combined with the validateRepoURL function explicitly permitting URLs that begin with / (local filesystem paths), a tenant who can submit ResolutionRequest objects can chain these two behaviors to execute an arbitrary binary on the resolver pod. The tekton-pipelines-resolvers ServiceAccount holds cluster-wide get/list/watch on all Secrets, so code execution on the resolver pod enables full cluster-wide secret exfiltration. Versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1 fix the issue.
- github.comhttps://github.com/tektoncd/pipeline/releases/tag/v1.11.1
- github.comhttps://github.com/tektoncd/pipeline/security/advisories/GHSA-94jr-7pqp-xhcq
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:17546
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:24359
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:24484
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:26519
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:26538
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-40938
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2460292
- github.comhttps://github.com/tektoncd/pipeline/security/advisories/GHSA-94jr-7pqp-xhcq
- security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40938.json