{"api_version":"1","generated_at":"2026-04-23T00:41:41+00:00","cve":"CVE-2026-40161","urls":{"html":"https://cve.report/CVE-2026-40161","api":"https://cve.report/api/cve/CVE-2026-40161.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-40161","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-40161"},"summary":{"title":"Tekton Pipelines: Git resolver API mode leaks system-configured API token to user-controlled serverURL","description":"Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. From 1.0.0 to 1.10.0, 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.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-04-21 17:16:53","updated_at":"2026-04-22 21:24:26"},"problem_types":["CWE-201","CWE-201 CWE-201: Insertion of Sensitive Information Into Sent Data"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"7.7","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.7","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}}],"references":[{"url":"https://github.com/tektoncd/pipeline/issues/9608","name":"https://github.com/tektoncd/pipeline/issues/9608","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/tektoncd/pipeline/issues/9609","name":"https://github.com/tektoncd/pipeline/issues/9609","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/tektoncd/pipeline/security/advisories/GHSA-wjxp-xrpv-xpff","name":"https://github.com/tektoncd/pipeline/security/advisories/GHSA-wjxp-xrpv-xpff","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-40161","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40161","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"tektoncd","product":"pipeline","version":"affected >= 1.0.0, <= 1.10.0","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"40161","cve":"CVE-2026-40161","epss":"0.000290000","percentile":"0.083090000","score_date":"2026-04-22","updated_at":"2026-04-23 00:03:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-40161","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-04-21T17:41:32.164689Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-04-21T17:41:38.895Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"pipeline","vendor":"tektoncd","versions":[{"status":"affected","version":">= 1.0.0, <= 1.10.0"}]}],"descriptions":[{"lang":"en","value":"Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. From 1.0.0 to 1.10.0, 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."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-201","description":"CWE-201: Insertion of Sensitive Information Into Sent Data","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-04-21T16:26:27.381Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/tektoncd/pipeline/security/advisories/GHSA-wjxp-xrpv-xpff","tags":["x_refsource_CONFIRM"],"url":"https://github.com/tektoncd/pipeline/security/advisories/GHSA-wjxp-xrpv-xpff"},{"name":"https://github.com/tektoncd/pipeline/issues/9608","tags":["x_refsource_MISC"],"url":"https://github.com/tektoncd/pipeline/issues/9608"},{"name":"https://github.com/tektoncd/pipeline/issues/9609","tags":["x_refsource_MISC"],"url":"https://github.com/tektoncd/pipeline/issues/9609"}],"source":{"advisory":"GHSA-wjxp-xrpv-xpff","discovery":"UNKNOWN"},"title":"Tekton Pipelines: Git resolver API mode leaks system-configured API token to user-controlled serverURL"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-40161","datePublished":"2026-04-21T16:26:27.381Z","dateReserved":"2026-04-09T19:31:56.014Z","dateUpdated":"2026-04-21T17:41:38.895Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-21 17:16:53","lastModifiedDate":"2026-04-22 21:24:26","problem_types":["CWE-201","CWE-201 CWE-201: Insertion of Sensitive Information Into Sent Data"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.1,"impactScore":4}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"40161","Ordinal":"1","Title":"Tekton Pipelines: Git resolver API mode leaks system-configured ","CVE":"CVE-2026-40161","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"40161","Ordinal":"1","NoteData":"Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. From 1.0.0 to 1.10.0, 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.","Type":"Description","Title":"Tekton Pipelines: Git resolver API mode leaks system-configured "}]}}}