Banks: Critical Remote Code Execution (RCE) via Jinja2 SSTI_CVE-2026-44209

{
    "lastseen": "",
    "description": "Banks generates meaningful LLM prompts using a template language that makes sense. Prior to 2.4.2, banks uses jinja2.Environment() (unsandboxed) to render prompt templates. Applications that pass user-supplied strings as the template argument to Prompt() are vulnerable to Server-Side Template Injection (SSTI), which can lead to Remote Code Execution (RCE) on the host system. This vulnerability is fixed in 2.4.2.",
    "published": "2026-05-26T20:46:56.002Z",
    "modified": "2026-05-26T20:46:56.002Z",
    "type": "cve",
    "title": "Banks: Critical Remote Code Execution (RCE) via Jinja2 SSTI",
    "source": "GitHub_M",
    "references": "https://github.com/masci/banks/security/advisories/GHSA-gphh-9q3h-jgpp\nhttps://github.com/masci/banks/pull/74",
    "id": "CVE-2026-44209",
    "bulletinFamily": "",
    "cwe": [
        "CWE-1336"
    ],
    "cvelist": null,
    "sourceData": "masci banks < 2.4.2",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/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": "banks",
    "version": "< 2.4.2",
    "vendor": "masci",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}