go-git: Missing validation decoding Index v4 files leads to panic_CVE-2026-33762

{
    "lastseen": "",
    "description": "go-git is an extensible git implementation library written in pure Go. Prior to version 5.17.1, go-git\u2019s index decoder for format version 4 fails to validate the path name prefix length before applying it to the previously decoded path name. A maliciously crafted index file can trigger an out-of-bounds slice operation, resulting in a runtime panic during normal index parsing. This issue only affects Git index format version 4. Earlier formats (go-git supports only v2 and v3) are not vulnerable to this issue. This issue has been patched in version 5.17.1.",
    "published": "2026-03-31T13:47:42.378Z",
    "modified": "2026-03-31T18:53:08.221Z",
    "type": "cve",
    "title": "go-git: Missing validation decoding Index v4 files leads to panic",
    "source": "GitHub_M",
    "references": "https://github.com/go-git/go-git/security/advisories/GHSA-gm2x-2g9h-ccm8\nhttps://github.com/go-git/go-git/releases/tag/v5.17.1",
    "id": "CVE-2026-33762",
    "bulletinFamily": "",
    "cwe": [
        "CWE-129"
    ],
    "cvelist": null,
    "sourceData": "go-git go-git < 5.17.1",
    "sourceHref": "",
    "cvss": {
        "score": 2.8,
        "severity": "LOW",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L",
        "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": "go-git",
    "version": "< 5.17.1",
    "vendor": "go-git",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}