Crates in third party registries can override the cached source of other crates_CVE-2026-5223

{
    "lastseen": "",
    "description": "Cargo incorrectly handled symlinks inside of crate tarballs downloaded from third-party registries, allowing a malicious crate to override the source code of another crate from the same registry.\u00a0The severity of the vulnerability is **medium** for users of third-party registries. Users of crates.io are **not affected**, as crates.io forbids uploading crates containing any symlink.",
    "published": "2026-05-25T08:57:08.488Z",
    "modified": "2026-05-25T08:57:08.488Z",
    "type": "cve",
    "title": "Crates in third party registries can override the cached source of other crates",
    "source": "rust",
    "references": "https://groups.google.com/g/rustlang-security-announcements/c/IB74S7Yksg8\nhttps://blog.rust-lang.org/2026/05/25/cve-2026-5223/\nhttps://github.com/rust-lang/cargo/pull/17031",
    "id": "CVE-2026-5223",
    "bulletinFamily": "",
    "cwe": [
        "CWE-61"
    ],
    "cvelist": null,
    "sourceData": "Rust Project Cargo 1.0.0",
    "sourceHref": "",
    "cvss": {
        "score": 6.5,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H",
        "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": "Cargo",
    "version": "1.0.0",
    "vendor": "Rust Project",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}