CVE-2026-54168

{"id": "CVE-2026-54168", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "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": "pipelines-as-code", "versions": [{"status": "affected", "version": "< 0.37.8"}, {"status": "affected", "version": ">= 0.38.0, < 0.39.6"}, {"status": "affected", "version": ">= 0.40.0, < 0.42.1"}, {"status": "affected", "version": ">= 0.43.0, < 0.48.0"}]}]}], "published": "2026-09-15T15:17:17.887", "references": [{"url": "https://github.com/tektoncd/pipelines-as-code/commit/001782829e82b83ecb3da903f5a024ca0826b64c", "source": "security-advisories@github.com"}, {"url": "https://github.com/tektoncd/pipelines-as-code/commit/40813976a77920feaf52671320d6d3c5ff08eb7e", "source": "security-advisories@github.com"}, {"url": "https://github.com/tektoncd/pipelines-as-code/commit/ac6fded6dfb69ade7197d4eeed6e90ddbe1b79bc", "source": "security-advisories@github.com"}, {"url": "https://github.com/tektoncd/pipelines-as-code/commit/e0c4a11ea3800ab9d26cf3a8ae92b74cf18527c3", "source": "security-advisories@github.com"}, {"url": "https://github.com/tektoncd/pipelines-as-code/releases/tag/v0.37.8", "source": "security-advisories@github.com"}, {"url": "https://github.com/tektoncd/pipelines-as-code/releases/tag/v0.39.6", "source": "security-advisories@github.com"}, {"url": "https://github.com/tektoncd/pipelines-as-code/releases/tag/v0.42.1", "source": "security-advisories@github.com"}, {"url": "https://github.com/tektoncd/pipelines-as-code/releases/tag/v0.48.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/tektoncd/pipelines-as-code/security/advisories/GHSA-6f2p-296r-cc28", "source": "security-advisories@github.com"}], "vulnStatus": "Received", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-269"}, {"lang": "en", "value": "CWE-862"}]}], "descriptions": [{"lang": "en", "value": "Pipelines-as-Code is a CI/CD system that lets users define Tekton pipelines in source code repositories. Prior to 0.37.8, 0.39.6, 0.42.1, and 0.48.0, a GitHub App installation token created during webhook processing is not scoped to the repository that triggered the event when the App is installed across multiple repositories. A user with push access to one repository can submit a PipelineRun containing a pipelinesascode.tekton.dev/task remote task annotation that targets a private repository in the same installation. When ScopeTokenToListOfRepos returns no explicit scope, the missing triggering repository ID leaves the token able to access the entire installation. Pipelines-as-Code resolves and inlines the remote private task with that token, disclosing the repository's Tekton definitions. The demonstrated impact is read-only and does not provide write access. This issue is fixed in versions 0.37.8, 0.39.6, 0.42.1, and 0.48.0."}], "lastModified": "2026-09-15T15:17:17.887", "sourceIdentifier": "security-advisories@github.com"}