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EUVD-2026-328569

fkie_cve-2026-50141

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.

GHSA-g7mm-9vx7-jm7h — Woodpecker gRPC agent_id metadata can be spoofed- cross-tenant agent impersonation

Affected: Go: go.woodpecker-ci.org/woodpecker/v3

### Impact 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.

### Patches Direct patch: https://github.com/woodpecker-ci/woodpecker/pull/6567 Later proper fix: https://github.com/woodpecker-ci/woodpecker/pull/6569

### Workarounds Disable org agents (`WOODPECKER_DISABLE_USER_AGENT_REGISTRATION=true`) and delete existing ones

### Resources Public ref: https://github.com/woodpecker-ci/woodpecker/issues/6541 Private com: https://github.com/woodpecker-ci/woodpecker-security/issues/21