PraisonAI: Symlink-extraction bypass of `_safe_extractall` writes outside `dest_dir`_CVE-2026-44340

{
    "lastseen": "",
    "description": "PraisonAI is a multi-agent teams system. Prior to version 4.6.37, the _safe_extractall helper that all recipe pull, recipe publish, and recipe unpack flows route through validates each archive member's name for absolute paths, .. segments, and resolved-path escape \u2014 but does not validate member.linkname, does not reject symlink/hardlink members, and calls tar.extractall(dest_dir) without filter=\"data\". A bundle that contains a symlink with a name inside dest_dir but a linkname pointing outside it, followed by a regular file whose path traverses through the just-created symlink, escapes dest_dir and lets the attacker write arbitrary content to an attacker-chosen location on the victim's filesystem. This issue has been patched in version 4.6.37.",
    "published": "2026-05-08T13:38:47.812Z",
    "modified": "2026-05-08T13:38:47.812Z",
    "type": "cve",
    "title": "PraisonAI: Symlink-extraction bypass of `_safe_extractall` writes outside `dest_dir`",
    "source": "GitHub_M",
    "references": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-9q28-ghcr-c4x3",
    "id": "CVE-2026-44340",
    "bulletinFamily": "",
    "cwe": [
        "CWE-22",
        "CWE-59"
    ],
    "cvelist": null,
    "sourceData": "MervinPraison PraisonAI < 4.6.37",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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": "PraisonAI",
    "version": "< 4.6.37",
    "vendor": "MervinPraison",
    "ai_description": "Symlink-extraction bypass of `_safe_extractall` writes outside `dest_dir`",
    "ai_severity": "High",
    "ai_vendor": "MervinPraison",
    "ai_product": "PraisonAI",
    "ai_version": "< 4.6.37",
    "ai_score": 8.7
}