Riskcovery

CVE-2026-40161

Tekton Pipelines: Git resolver API mode leaks system-configured API token to user-controlled serverURL

State
Published
Severity
7.7 High
Published
Apr 21, 2026
Updated
May 21, 2026
Reserved
Apr 9, 2026

Read the record on cve.org

Description

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 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. Versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1 fix the issue.

Scores

CVSSScoreVectorSource
3.17.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:NGitHub_M

Weaknesses

  • CWE-201 Insertion of Sensitive Information Into Sent Data

Affected Products

ProductVersions
pipelinetektoncd
  • >= 1.0.0, < 1.0.2Affected
  • >= 1.2.0, < 1.3.4Affected
  • >= 1.4.0, < 1.6.2Affected
  • >= 1.7.0, < 1.9.3Affected
  • >= 1.10.0, < 1.11.1Affected

References

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