Bug 2460173 (CVE-2026-40161) - CVE-2026-40161 github.com/tektoncd/pipeline: Tekton Pipelines: Information disclosure of Git API token via user-controlled serverURL
Summary: CVE-2026-40161 github.com/tektoncd/pipeline: Tekton Pipelines: Information di...
Keywords:
Status: NEW
Alias: CVE-2026-40161
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-21 17:02 UTC by OSIDB Bzimport
Modified: 2026-04-23 23:17 UTC (History)
32 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-04-21 17:02:30 UTC 
Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. From 1.0.0 to 1.10.0, the Tekton Pipelines git resolver in API mode sends the system-configured Git API token to a user-controlled serverURL when the user omits the token parameter. A tenant with TaskRun or PipelineRun create permission can exfiltrate the shared API token (GitHub PAT, GitLab token, etc.) by pointing serverURL to an attacker-controlled endpoint.
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