CVE-2026-40161

HIGH

7.7

Description

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.

CVE Details

CVSS v3.1 Score7.7

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published4/21/2026

Last Modified4/22/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-201

References

https://github.com/tektoncd/pipeline/issues/9608(security-advisories@github.com)

https://github.com/tektoncd/pipeline/issues/9609(security-advisories@github.com)

https://github.com/tektoncd/pipeline/security/advisories/GHSA-wjxp-xrpv-xpff(security-advisories@github.com)

IOC Correlations

No correlations recorded

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