gitsign –verify panics on empty-certificate PKCS7 and exits 0, bypassing exit-code callers_CVE-2026-44310

{
    "lastseen": "",
    "description": "Gitsign is a keyless Sigstore to signing tool for Git commits with your a GitHub / OIDC identity. From 0.4.0 to before 0.15.0, CertVerifier.Verify() in pkg/git/verifier.go unconditionally dereferences certs[0] after sd.GetCertificates() without checking the slice length. A CMS/PKCS7 signed message with an empty certificate set is a structurally valid DER payload; GetCertificates() returns an empty slice with no error, causing an immediate index-out-of-range panic. On the gitsign --verify code path (the GPG-compatible mode invoked by git verify-commit), the panic is silently recovered by internal/io/streams.go's Wrap() function, which returns nil instead of an error. main.go then exits with code 0, causing exit-code-only verification callers to interpret the failed verification as success. This vulnerability is fixed in 0.15.0.",
    "published": "2026-05-15T16:17:53.558Z",
    "modified": "2026-05-15T16:44:36.684Z",
    "type": "cve",
    "title": "gitsign --verify panics on empty-certificate PKCS7 and exits 0, bypassing exit-code callers",
    "source": "GitHub_M",
    "references": "https://github.com/sigstore/gitsign/security/advisories/GHSA-7c37-gx6w-8vc5",
    "id": "CVE-2026-44310",
    "bulletinFamily": "",
    "cwe": [
        "CWE-129",
        "CWE-390"
    ],
    "cvelist": null,
    "sourceData": "sigstore gitsign >= 0.4.0, < 0.15.0",
    "sourceHref": "",
    "cvss": {
        "score": 5.4,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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": "gitsign",
    "version": ">= 0.4.0, < 0.15.0",
    "vendor": "sigstore",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}