Users are able to find users by name even when `enable_names` is off_CVE-2025-64528

{
    "lastseen": "",
    "description": "Discourse is an open source discussion platform. Prior to versions 3.5.3, 2025.11.1, and 2025.12.0, an attacker who knows part of a username can find the user and their full name via UI or API, even when `enable_names` is disabled. Versions 3.5.3, 2025.11.1, and 2025.12.0 contain a fix.",
    "published": "2025-12-30T16:04:10.093Z",
    "modified": "2025-12-30T16:04:10.093Z",
    "type": "cve",
    "title": "Users are able to find users by name even when `enable_names` is off",
    "source": "GitHub_M",
    "references": "https://github.com/discourse/discourse/security/advisories/GHSA-c59w-jwx7-34v4\nhttps://github.com/discourse/discourse/commit/1cb45b8b287597085e3514596ffb1d9b41938f81\nhttps://github.com/discourse/discourse/commit/6192f55629624925595dae14364fd86cac0f09df\nhttps://github.com/discourse/discourse/commit/e936a523b5900a9d866d23ea3da904ba12bb0fb2",
    "id": "CVE-2025-64528",
    "bulletinFamily": "",
    "cwe": [
        "CWE-202"
    ],
    "cvelist": null,
    "sourceData": "discourse discourse < 3.5.3\ndiscourse discourse >= 2025.11.0-latest, < 2025.11.1\ndiscourse discourse >= 2025.12.0-latest, < 2025.12.0",
    "sourceHref": "",
    "cvss": {
        "score": 6.3,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/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": "discourse",
    "version": "< 3.5.3",
    "vendor": "discourse",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}