{"id":"CVE-2026-50141","aliases":["GHSA-g7mm-9vx7-jm7h","GO-2026-5976"],"url":"https://o3.security/vulnerability/CVE-2026-50141","summary":"Woodpecker gRPC agent_id metadata can be spoofed- cross-tenant agent impersonation","details":"Woodpecker is a CI/CD engine. Starting in version 3.0.0 and prior to version 3.14.1, a vulnerability in Woodpecker CI's gRPC layer allowed any authenticated agent to impersonate any other agent on the same server by injecting a forged `agent_id` value into outgoing gRPC metadata. The server correctly verified the JWT token but then discarded the verified agent identity in favor of the client-supplied value. Version 3.14.1 patches the issue. As a workaround, disable org agents (`WOODPECKER_DISABLE_USER_AGENT_REGISTRATION=true`) and delete existing ones.","published":"2026-06-18T14:13:38.065Z","modified":"2026-08-12T03:51:41.788209374Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"go.woodpecker-ci.org/woodpecker/v3","fixedVersion":"3.14.1"}],"fix":{"url":"https://github.com/woodpecker-ci/woodpecker/pull/6567","label":"woodpecker-ci/woodpecker#6567"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50141.json"},{"type":"ADVISORY","url":"https://github.com/woodpecker-ci/woodpecker/security/advisories/GHSA-g7mm-9vx7-jm7h"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50141"},{"type":"REPORT","url":"https://github.com/woodpecker-ci/woodpecker-security/issues/21"},{"type":"REPORT","url":"https://github.com/woodpecker-ci/woodpecker/issues/6541"},{"type":"FIX","url":"https://github.com/woodpecker-ci/woodpecker/pull/6567"},{"type":"FIX","url":"https://github.com/woodpecker-ci/woodpecker/pull/6569"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:41.788209374Z"}}