Tekton Pipelines git resolver has path traversal that allows reading arbitrary files from the resolver pod

Summary

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.

Timeline

1. Mar 23, 2026, 11:55 PM UTCCVE published
2. Mar 24, 2026, 3:40 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Sep 7, 2026, 12:05 PM UTCRecord last updated

Affected versions

• tektoncd pipeline

  From 1.0.0 · fixed in 1.0.1; From 1.1.0 · fixed in 1.3.3; From 1.4.0 · fixed in 1.6.1; From 1.7.0 · fixed in 1.9.2; From 1.10.0 · fixed in 1.10.2

• github.com/tektoncd/pipelineGo

  From 1.0.0 · fixed in 1.0.1

• github.com/tektoncd/pipelineGo

  From 1.1.0 · fixed in 1.3.3

• github.com/tektoncd/pipelineGo

  From 1.4.0 · fixed in 1.6.1

• github.com/tektoncd/pipelineGo

  From 1.7.0 · fixed in 1.9.2

• github.com/tektoncd/pipelineGo

  From 1.10.0 · fixed in 1.10.2

• github.com/tektoncd/pipelineGo

  From 1.0.0 · fixed in 1.0.1; From 1.1.0 · fixed in 1.3.3; From 1.4.0 · fixed in 1.6.1; From 1.7.0 · fixed in 1.9.2; From 1.10.0 · fixed in 1.11.1

References 8