Vulnerability Details CVE-2026-40161
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 11.3%
CVSS Severity
CVSS v3 Score 7.7
References
Products affected by CVE-2026-40161
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.0.0
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.0.1
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.1.0
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.10.0
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.2.0
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.3.0
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.3.1
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.3.2
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.3.3
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.4.0
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.5.0
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.6.0
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.6.1
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.7.0
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.9.0
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.9.1
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cpe:2.3:a:linuxfoundation:tekton_pipelines:1.9.2