🛡️ CVE-2026-50141 — woodpecker

🟠 CVSS 8.0 — High ✅ No Known Exploit NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Woodpecker gRPC agent_id metadata can be spoofed- cross-tenant agent impersonation

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

Affected software

CVE-2026-50141 is recorded against 4 packages.

  • go.woodpecker-ci.org/woodpecker
  • go.woodpecker-ci.org/woodpecker/v2
  • go.woodpecker-ci.org/woodpecker/v3
  • unknown

Timeline and source

Published on 17 July 2026 and last revised on 21 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Advisory)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)

Details

Severity High
CVSS Score 8.0
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2026-07-17
Updated 2026-08-12
Modified 2026-07-21
Fix URL N/A

Affected Packages

Software From version Fixed in
go.woodpecker-ci.org/woodpecker
go.woodpecker-ci.org/woodpecker/v2
go.woodpecker-ci.org/woodpecker/v3
unknown

Similar Threats

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