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.

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.1 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/tektoncd/pipeline/issues/9608	Issue Tracking
https://github.com/tektoncd/pipeline/issues/9609	Issue Tracking
https://github.com/tektoncd/pipeline/security/advisories/GHSA-wjxp-xrpv-xpff	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:linuxfoundation:tekton_pipelines:*:*:*:*:*:go:*:*

History

No history.

Information

Published : 2026-04-21 17:16

Updated : 2026-06-17 10:44

NVD link : CVE-2026-40161

Mitre link : CVE-2026-40161

CVE.ORG link : CVE-2026-40161

JSON object : View

Products Affected

linuxfoundation

tekton_pipelines

CWE

CWE-201

Insertion of Sensitive Information Into Sent Data

NVD-CWE-noinfo

{"id": "CVE-2026-40161", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-40161", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-21T17:41:32.164689Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 4.0, "exploitabilityScore": 3.1}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "tektoncd", "product": "pipeline", "versions": [{"status": "affected", "version": ">= 1.0.0, < 1.0.2"}, {"status": "affected", "version": ">= 1.2.0, < 1.3.4"}, {"status": "affected", "version": ">= 1.4.0, < 1.6.2"}, {"status": "affected", "version": ">= 1.7.0, < 1.9.3"}, {"status": "affected", "version": ">= 1.10.0, < 1.11.1"}]}]}], "published": "2026-04-21T17:16:53.790", "references": [{"url": "https://github.com/tektoncd/pipeline/issues/9608", "tags": ["Issue Tracking"], "source": "security-advisories@github.com"}, {"url": "https://github.com/tektoncd/pipeline/issues/9609", "tags": ["Issue Tracking"], "source": "security-advisories@github.com"}, {"url": "https://github.com/tektoncd/pipeline/security/advisories/GHSA-wjxp-xrpv-xpff", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-201"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-06-17T10:44:47.717", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:linuxfoundation:tekton_pipelines:*:*:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "4C365A15-24E6-468E-8A0F-27BA04AE4693", "versionEndIncluding": "1.10.0", "versionStartIncluding": "1.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}