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 git resolver's revision parameter is passed directly as a positional argument to git fetch without any validation that it does not begin with a - character. Because git parses flags from mixed positional arguments, an attacker can inject arbitrary git fetch flags such as --upload-pack=<binary>. Combined with the validateRepoURL function explicitly permitting URLs that begin with / (local filesystem paths), a tenant who can submit ResolutionRequest objects can chain these two behaviors to execute an arbitrary binary on the resolver pod. The tekton-pipelines-resolvers ServiceAccount holds cluster-wide get/list/watch on all Secrets, so code execution on the resolver pod enables full cluster-wide secret exfiltration. Versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1 fix the issue.
References
Configurations
History
30 Jun 2026, 03:19
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21 May 2026, 23:16
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| Summary | (en) 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 git resolver's revision parameter is passed directly as a positional argument to git fetch without any validation that it does not begin with a - character. Because git parses flags from mixed positional arguments, an attacker can inject arbitrary git fetch flags such as --upload-pack=<binary>. Combined with the validateRepoURL function explicitly permitting URLs that begin with / (local filesystem paths), a tenant who can submit ResolutionRequest objects can chain these two behaviors to execute an arbitrary binary on the resolver pod. The tekton-pipelines-resolvers ServiceAccount holds cluster-wide get/list/watch on all Secrets, so code execution on the resolver pod enables full cluster-wide secret exfiltration. Versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1 fix the issue. |
27 Apr 2026, 18:05
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| References | () https://github.com/tektoncd/pipeline/releases/tag/v1.11.1 - Release Notes | |
| References | () https://github.com/tektoncd/pipeline/security/advisories/GHSA-94jr-7pqp-xhcq - Exploit, Vendor Advisory | |
| First Time |
Linuxfoundation
Linuxfoundation tekton Pipelines |
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| CPE | cpe:2.3:a:linuxfoundation:tekton_pipelines:*:*:*:*:*:go:*:* |
22 Apr 2026, 19:17
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| References | () https://github.com/tektoncd/pipeline/security/advisories/GHSA-94jr-7pqp-xhcq - |
21 Apr 2026, 21:16
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| New CVE |
Information
Published : 2026-04-21 21:16
Updated : 2026-07-20 12:19
NVD link : CVE-2026-40938
Mitre link : CVE-2026-40938
CVE.ORG link : CVE-2026-40938
JSON object : View
Products Affected
linuxfoundation
- tekton_pipelines
CWE
CWE-88
Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')