OWASP BLT: pre-commit-fix.yaml executes untrusted fork code via pull_request_target_CVE-2026-42603

{
    "lastseen": "",
    "description": "OWASP BLT is a QA testing and vulnerability disclosure platform that encompasses websites, apps, git repositories, and more. Prior to 2.1.2, .github/workflows/pre-commit-fix.yaml uses pull_request_target (privileged trigger) but checks out and executes code directly from the attacker's fork, enabling RCE with write permissions. This vulnerability is fixed in 2.1.2.",
    "published": "2026-05-11T16:11:55.297Z",
    "modified": "2026-05-11T16:11:55.297Z",
    "type": "cve",
    "title": "OWASP BLT: pre-commit-fix.yaml executes untrusted fork code via pull_request_target",
    "source": "GitHub_M",
    "references": "https://github.com/OWASP-BLT/BLT/security/advisories/GHSA-cgvj-qg2h-cqfh",
    "id": "CVE-2026-42603",
    "bulletinFamily": "",
    "cwe": [
        "CWE-94",
        "CWE-95"
    ],
    "cvelist": null,
    "sourceData": "OWASP-BLT BLT < 2.1.2",
    "sourceHref": "",
    "cvss": {
        "score": 8.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "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": "BLT",
    "version": "< 2.1.2",
    "vendor": "OWASP-BLT",
    "ai_description": "Remote Code Execution (RCE) vulnerability in OWASP BLT due to execution of untrusted fork code via pull_request_target",
    "ai_severity": "High",
    "ai_vendor": "OWASP-BLT",
    "ai_product": "BLT",
    "ai_version": "< 2.1.2",
    "ai_score": 8.8
}