Discourse: Hidden tag visibility bypass on tag routes_CVE-2026-27481

{
    "lastseen": "",
    "description": "Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an authorization bypass vulnerability allows unauthenticated or unauthorized users to view hidden (staff-only) tags and its associated data. All Discourse instances with tagging enabled and staff-only tag groups configured are impacted. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.",
    "published": "2026-04-03T21:27:12.156Z",
    "modified": "2026-04-07T14:18:35.689Z",
    "type": "cve",
    "title": "Discourse: Hidden tag visibility bypass on tag routes",
    "source": "GitHub_M",
    "references": "https://github.com/discourse/discourse/security/advisories/GHSA-6c9x-3vrp-682x",
    "id": "CVE-2026-27481",
    "bulletinFamily": "",
    "cwe": [
        "CWE-200"
    ],
    "cvelist": null,
    "sourceData": "discourse discourse >= 2026.1.0-latest, < 2026.1.3\ndiscourse discourse >= 2026.2.0-latest, < 2026.2.2\ndiscourse discourse >= 2026.3.0-latest, < 2026.3.0",
    "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:N/SI:N/SA:N",
        "version": "4.0"
    },
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    "href": "",
    "category_name": "CVE",
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    "product": "discourse",
    "version": ">= 2026.1.0-latest, < 2026.1.3",
    "vendor": "discourse",
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}