CVE-2026-33211 — Tekton Pipelines git resolver has path traversal that allows reading arbitrary files from the resolver pod

Description (CNA)

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 1.0.0 and prior to versions 1.0.1, 1.3.3, 1.6.1, 1.9.2, and 1.10.2, the Tekton Pipelines git resolver is vulnerable to path traversal via the `pathInRepo` parameter. A tenant with permission to create `ResolutionRequests` (e.g. by creating `TaskRuns` or `PipelineRuns` that use the git resolver) can read arbitrary files from the resolver pod's filesystem, including ServiceAccount tokens. The file contents are returned base64-encoded in `resolutionrequest.status.data`. Versions 1.0.1, 1.3.3, 1.6.1, 1.9.2, and 1.10.2 contain a patch.

Affected (CNA)

Vendor / product	Versions
tektoncd / pipeline	affected >= 1.0.0, < 1.0.1; affected >= 1.1.0, < 1.3.3; affected >= 1.4.0, < 1.6.1; affected >= 1.7.0, < 1.9.2; affected >= 1.10.0, < 1.10.2

CWE

CWE-22

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

redhat-SADP

A flaw was found in Tekton Pipelines, specifically in the Tekton Pipelines git resolver. A tenant with permissions to create ResolutionRequests can exploit a path traversal vulnerability via the `pathInRepo` parameter. This allows the tenant to read arbitrary files from the resolver pod's filesystem, leading to information disclosure, including sensitive ServiceAccount tokens. The contents of these files are returned in a base64-encoded format.