{"id":"CVE-2026-50141","state":"PUBLISHED","title":"Woodpecker gRPC agent_id metadata can be spoofed- cross-tenant agent impersonation","description":"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.","publishedAt":"2026-06-18T14:13:38.065Z","updatedAt":"2026-06-18T16:10:41.914Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["woodpecker-ci woodpecker"],"affected":[{"vendor":"woodpecker-ci","product":"woodpecker","versions":[{"version":">= 3.0.0, < 3.14.1","status":"affected"}]}],"references":["https://github.com/woodpecker-ci/woodpecker/security/advisories/GHSA-g7mm-9vx7-jm7h","https://github.com/woodpecker-ci/woodpecker-security/issues/21","https://github.com/woodpecker-ci/woodpecker/issues/6541","https://github.com/woodpecker-ci/woodpecker/pull/6567","https://github.com/woodpecker-ci/woodpecker/pull/6569"],"weaknesses":["CWE-290","CWE-639"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/50xxx/CVE-2026-50141.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-50141","state":"PUBLISHED","datePublished":"2026-06-18T14:13:38.065Z","dateUpdated":"2026-06-18T16:10:41.914Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-03T18:49:32.275Z"},"containers":{"cna":{"title":"Woodpecker gRPC agent_id metadata can be spoofed- cross-tenant agent impersonation","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"woodpecker-ci","product":"woodpecker","versions":[{"version":">= 3.0.0, < 3.14.1","status":"affected"}]}],"references":[{"url":"https://github.com/woodpecker-ci/woodpecker/security/advisories/GHSA-g7mm-9vx7-jm7h","name":"https://github.com/woodpecker-ci/woodpecker/security/advisories/GHSA-g7mm-9vx7-jm7h","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/woodpecker-ci/woodpecker-security/issues/21","name":"https://github.com/woodpecker-ci/woodpecker-security/issues/21","tags":["x_refsource_MISC"]},{"url":"https://github.com/woodpecker-ci/woodpecker/issues/6541","name":"https://github.com/woodpecker-ci/woodpecker/issues/6541","tags":["x_refsource_MISC"]},{"url":"https://github.com/woodpecker-ci/woodpecker/pull/6567","name":"https://github.com/woodpecker-ci/woodpecker/pull/6567","tags":["x_refsource_MISC"]},{"url":"https://github.com/woodpecker-ci/woodpecker/pull/6569","name":"https://github.com/woodpecker-ci/woodpecker/pull/6569","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-290","lang":"en","description":"CWE-290: Authentication Bypass by Spoofing","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-18T14:13:38.065Z"},"source":{"advisory":"GHSA-g7mm-9vx7-jm7h","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-18T15:21:39.524543Z","id":"CVE-2026-50141","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-18T16:10:41.914Z"}}]}}}