{"cve":"CVE-2026-54167","nvd":{"published":"2026-09-15T15:17:17.707","modified":"2026-09-30T17:43:24.057","status":"Awaiting Analysis","description":"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, the GitHub App provider accepts X-GitHub-Enterprise-Host as the API host while processing webhook events containing an installation.id, before webhook signature validation or confirmation that the host matches the repository URL in the signed payload. An unauthenticated attacker who can reach the webhook endpoint can select an attacker-controlled host and cause the controller to send a locally signed GitHub App JWT to that service. The exposed JWT may be used to attempt to mint installation access tokens during its validity window, subject to the GitHub App installation and permissions. The incoming webhook installation-lookup path is also affected, but exploitation of that path requires the valid incoming webhook secret for the target Repository CR. This issue is fixed in versions 0.37.8, 0.39.6, 0.42.1, and 0.48.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","score":8.2},"cwes":["CWE-345"],"references":["https://github.com/tektoncd/pipelines-as-code/commit/402d5c7eeece881cb082ec68e9e8b61709e39ace","https://github.com/tektoncd/pipelines-as-code/commit/40813976a77920feaf52671320d6d3c5ff08eb7e","https://github.com/tektoncd/pipelines-as-code/commit/ac6fded6dfb69ade7197d4eeed6e90ddbe1b79bc","https://github.com/tektoncd/pipelines-as-code/commit/e0c4a11ea3800ab9d26cf3a8ae92b74cf18527c3","https://github.com/tektoncd/pipelines-as-code/releases/tag/v0.37.8"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-54167","score":0.00268,"percentile":0.18819,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-f5f4-3hh4-f54m","url":"https://osv.dev/vulnerability/GHSA-f5f4-3hh4-f54m","summary":"Pipelines-as-Code GitHub App token request can be redirected via untrusted Enterprise Host header","modified":"2026-08-26T01:21:46.548790533Z","packages":[{"ecosystem":"Go","name":"github.com/openshift-pipelines/pipelines-as-code","purl":"pkg:golang/github.com/openshift-pipelines/pipelines-as-code","ranges":[">=0.43.0 <0.48.0"],"fixed":["0.48.0"]},{"ecosystem":"Go","name":"github.com/openshift-pipelines/pipelines-as-code","purl":"pkg:golang/github.com/openshift-pipelines/pipelines-as-code","ranges":[">=0.40.0 <0.42.1"],"fixed":["0.42.1"]},{"ecosystem":"Go","name":"github.com/openshift-pipelines/pipelines-as-code","purl":"pkg:golang/github.com/openshift-pipelines/pipelines-as-code","ranges":[">=0.38.0 <0.39.6"],"fixed":["0.39.6"]},{"ecosystem":"Go","name":"github.com/openshift-pipelines/pipelines-as-code","purl":"pkg:golang/github.com/openshift-pipelines/pipelines-as-code","ranges":["<0.37.8"],"fixed":["0.37.8"]}]},{"id":"GO-2026-6266","url":"https://osv.dev/vulnerability/GO-2026-6266","summary":"Pipelines-as-Code GitHub App token request can be redirected via untrusted Enterprise Host header in github.com/openshift-pipelines/pipelines-as-code","modified":"2026-08-26T01:21:40.536313331Z","packages":[{"ecosystem":"Go","name":"github.com/openshift-pipelines/pipelines-as-code","purl":"pkg:golang/github.com/openshift-pipelines/pipelines-as-code","ranges":["<0.37.8",">=0.38.0 <0.39.6",">=0.40.0 <0.42.1",">=0.43.0 <0.48.0"],"fixed":["0.37.8","0.39.6","0.42.1","0.48.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}