Discourse Has Denial of Service (DoS) Vulnerability in Drafts Creation Endpoint_CVE-2025-68934

{
    "lastseen": "",
    "description": "Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, authenticated users can submit crafted payloads to /drafts.json that cause O(n^2) processing in Base62.decode, tying up workers for 35-60 seconds per request. This affects all users as the shared worker pool becomes exhausted. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. Lowering the max_draft_length site setting reduces attack surface but does not fully mitigate the issue, as payloads under the limit can still trigger the slow code path.",
    "published": "2026-01-28T19:19:59.627Z",
    "modified": "2026-01-28T19:46:16.472Z",
    "type": "cve",
    "title": "Discourse Has Denial of Service (DoS) Vulnerability in Drafts Creation Endpoint",
    "source": "GitHub_M",
    "references": "https://github.com/discourse/discourse/security/advisories/GHSA-vwjh-vrx9-9849",
    "id": "CVE-2025-68934",
    "bulletinFamily": "",
    "cwe": [
        "CWE-770"
    ],
    "cvelist": null,
    "sourceData": "discourse discourse < 3.5.4\ndiscourse discourse >= 2025.11.0-latest, < 2025.11.2\ndiscourse discourse >= 2025.12.0-latest, 2025.12.1\ndiscourse discourse >= 2026.1.0-latest, < 2026.1.0",
    "sourceHref": "",
    "cvss": {
        "score": 6.5,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "discourse",
    "version": "< 3.5.4",
    "vendor": "discourse",
    "ai_description": "",
    "ai_severity": "",
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    "ai_score": 0
}