CVE-2026-40161

Summary

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 1.0.0 and prior to versions 1.0.2, 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.

Affected Software

VendorProductVersion RangeStatus
tektoncdpipeline>= 1.0.0, < 1.0.2affected
tektoncdpipeline>= 1.2.0, < 1.3.4affected
tektoncdpipeline>= 1.4.0, < 1.6.2affected
tektoncdpipeline>= 1.7.0, < 1.9.3affected
tektoncdpipeline>= 1.10.0, < 1.11.1affected

Weaknesses

  • CWE-201: CWE-201: Insertion of Sensitive Information Into Sent Data

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References