PraisonAI: Python Sandbox Escape via str Subclass startswith() Override in execute_code_CVE-2026-34938

{
    "lastseen": "",
    "description": "PraisonAI is a multi-agent teams system. Prior to version 1.5.90, execute_code() in praisonai-agents runs attacker-controlled Python inside a three-layer sandbox that can be fully bypassed by passing a str subclass with an overridden startswith() method to the _safe_getattr wrapper, achieving arbitrary OS command execution on the host. This issue has been patched in version 1.5.90.",
    "published": "2026-04-03T22:51:28.199Z",
    "modified": "2026-04-06T13:23:42.009Z",
    "type": "cve",
    "title": "PraisonAI: Python Sandbox Escape via str Subclass startswith() Override in execute_code",
    "source": "GitHub_M",
    "references": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-6vh2-h83c-9294",
    "id": "CVE-2026-34938",
    "bulletinFamily": "",
    "cwe": [
        "CWE-693"
    ],
    "cvelist": null,
    "sourceData": "MervinPraison PraisonAI < 1.5.90",
    "sourceHref": "",
    "cvss": {
        "score": 10,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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": "PraisonAI",
    "version": "< 1.5.90",
    "vendor": "MervinPraison",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}