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Kubernetes CVE-2026-40938

| EUVDEUVD-2026-24491 HIGH
Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') (CWE-88)
2026-04-21 GitHub_M GHSA-94jr-7pqp-xhcq
8.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
8.5 HIGH
AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
SUSE
7.5 HIGH
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Red Hat
8.5 HIGH
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

5
CVSS changed
Jun 30, 2026 - 03:24 NVD
7.5 (HIGH) 8.5 (HIGH)
Patch released
Apr 28, 2026 - 15:06 nvd
Patch available
Patch available
Apr 21, 2026 - 22:17 EUVD
EUVD ID Assigned
Apr 21, 2026 - 21:01 euvd
EUVD-2026-24491
CVE Published
Apr 21, 2026 - 20:45 nvd
HIGH 7.5

DescriptionNVD

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. From 1.0.0 to before 1.11.0, 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. This vulnerability is fixed in 1.11.1.

Analysis

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. From 1.0.0 to before 1.11.0, 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. This vulnerability is fixed in 1.11.1.

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Vendor StatusVendor

SUSE

Severity: High

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CVE-2026-40938 vulnerability details – vuln.today

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