CVE-2026-50141 (GCVE-0-2026-50141)
Vulnerability from cvelistv5 – Published: 2026-06-18 14:13 – Updated: 2026-06-18 16:10
VLAI
EPSS
VEX
Title
Woodpecker gRPC agent_id metadata can be spoofed- cross-tenant agent impersonation
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-18 15:21 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/woodpecker-ci/woodpecker/secur… | x_refsource_CONFIRM |
| https://github.com/woodpecker-ci/woodpecker-secur… | x_refsource_MISC |
| https://github.com/woodpecker-ci/woodpecker/issues/6541 | x_refsource_MISC |
| https://github.com/woodpecker-ci/woodpecker/pull/6567 | x_refsource_MISC |
| https://github.com/woodpecker-ci/woodpecker/pull/6569 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| woodpecker-ci | woodpecker |
Affected:
>= 3.0.0, < 3.14.1
|
guessed |
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Sightings
| Author | Source | Type | Date | Other |
|---|
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.