High 7.7Published Apr 21, 2026

CVE-2026-40161Tekton Pipelines: Git resolver API mode leaks system-configured API token to user-controlled serverURL

Updated under an hour ago (Oct 28, 2026, 6:30 AM ET)

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It affects tektoncd pipeline and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for tektoncd pipeline

Exploited in the last 30 days

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.

CVSS: 7.7 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weakness (CWE): CWE-201
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Modified
Record last updated: May 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

tektoncd pipeline tektoncd:pipeline (from the name)	from 1.0.0, < 1.0.2; from 1.2.0, < 1.3.4; from 1.4.0, < 1.6.2; from 1.7.0, < 1.9.3; from 1.10.0, < 1.11.1	CNA record
linuxfoundation tekton_pipelines linuxfoundation:tekton_pipelines	from 1.0.0 through 1.10.0	NVD

References

References

https://github.com/tektoncd/pipeline/security/advisories/GHSA-wjxp-xrpv-xpff	x-refsource-confirm, vendor-advisory
https://github.com/tektoncd/pipeline/issues/9608	x-refsource-misc, issue-tracking
https://github.com/tektoncd/pipeline/issues/9609	x-refsource-misc, issue-tracking

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.