Mako: Path traversal via backslash URI on Windows in TemplateLookup_CVE-2026-44307

{
    "lastseen": "",
    "description": "Mako is a template library written in Python. Prior to 1.3.12, on Windows, a URI using backslash traversal (e.g. \\..\\..\\ secret.txt) bypasses the directory traversal check in Template.__init__ and the posixpath-based normalization in TemplateLookup.get_template(), allowing reads of files outside the configured template directory. This vulnerability is fixed in 1.3.12.",
    "published": "2026-05-12T21:53:52.826Z",
    "modified": "2026-05-12T21:53:52.826Z",
    "type": "cve",
    "title": "Mako: Path traversal via backslash URI on Windows in TemplateLookup",
    "source": "GitHub_M",
    "references": "https://github.com/sqlalchemy/mako/security/advisories/GHSA-2h4p-vjrc-8xpq\nhttps://github.com/sqlalchemy/mako/issues/435\nhttps://github.com/sqlalchemy/mako/commit/72e10c573ca0fbcbddd4455abca8ce92a61780d7\nhttps://github.com/sqlalchemy/mako/releases/tag/rel_1_3_12",
    "id": "CVE-2026-44307",
    "bulletinFamily": "",
    "cwe": [
        "CWE-22"
    ],
    "cvelist": null,
    "sourceData": "sqlalchemy mako < 1.3.12",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/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": "",
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            "privilegesRequired": "",
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            "confidentialityImpact": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "mako",
    "version": "< 1.3.12",
    "vendor": "sqlalchemy",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}