Woodpecker gRPC agent_id metadata can be spoofed- cross-tenant agent impersonation_CVE-2026-50141

{
    "lastseen": "",
    "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.",
    "published": "2026-06-18T14:13:38.065Z",
    "modified": "2026-06-18T16:10:41.914Z",
    "type": "cve",
    "title": "Woodpecker gRPC agent_id metadata can be spoofed- cross-tenant agent impersonation",
    "source": "GitHub_M",
    "references": "https://github.com/woodpecker-ci/woodpecker/security/advisories/GHSA-g7mm-9vx7-jm7h\nhttps://github.com/woodpecker-ci/woodpecker-security/issues/21\nhttps://github.com/woodpecker-ci/woodpecker/issues/6541\nhttps://github.com/woodpecker-ci/woodpecker/pull/6567\nhttps://github.com/woodpecker-ci/woodpecker/pull/6569",
    "id": "CVE-2026-50141",
    "bulletinFamily": "",
    "cwe": [
        "CWE-290",
        "CWE-639"
    ],
    "cvelist": null,
    "sourceData": "woodpecker-ci woodpecker >= 3.0.0, < 3.14.1",
    "sourceHref": "",
    "cvss": {
        "score": 7.1,
        "severity": "HIGH",
        "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "woodpecker",
    "version": ">= 3.0.0, < 3.14.1",
    "vendor": "woodpecker-ci",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}