{
"id": "GHSA-g7mm-9vx7-jm7h",
"aliases": [
"CVE-2026-50141"
],
"details": "### Impact\nA 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.\n\n### Patches\nDirect patch: https://github.com/woodpecker-ci/woodpecker/pull/6567\nLater proper fix: https://github.com/woodpecker-ci/woodpecker/pull/6569\n\n### Workarounds\nDisable org agents (`WOODPECKER_DISABLE_USER_AGENT_REGISTRATION=true`) and delete existing ones\n\n### Resources\nPublic ref: https://github.com/woodpecker-ci/woodpecker/issues/6541\nPrivate com: https://github.com/woodpecker-ci/woodpecker-security/issues/21",
"summary": "Woodpecker gRPC agent_id metadata can be spoofed- cross-tenant agent impersonation",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.14.1"
}
]
}
],
"package": {
"name": "go.woodpecker-ci.org/woodpecker/v3",
"ecosystem": "Go"
}
}
],
"modified": "2026-07-14T19:00:29Z",
"severity": [
{
"type": "CVSS_V4",
"score": "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"
}
],
"published": "2026-07-14T19:00:29Z",
"references": [
{
"url": "https://github.com/woodpecker-ci/woodpecker/security/advisories/GHSA-g7mm-9vx7-jm7h",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50141",
"type": "ADVISORY"
},
{
"url": "https://github.com/woodpecker-ci/woodpecker-security/issues/21",
"type": "WEB"
},
{
"url": "https://github.com/woodpecker-ci/woodpecker/issues/6541",
"type": "WEB"
},
{
"url": "https://github.com/woodpecker-ci/woodpecker/pull/6567",
"type": "WEB"
},
{
"url": "https://github.com/woodpecker-ci/woodpecker/pull/6569",
"type": "WEB"
},
{
"url": "https://github.com/woodpecker-ci/woodpecker",
"type": "PACKAGE"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-290",
"CWE-639"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": "2026-06-18T14:17:29Z",
"github_reviewed_at": "2026-07-14T19:00:29Z"
}
}