TSPortal’s Uncontrolled User Creation via Validation Side Effects Leads to Potential Denial of Service_CVE-2026-33541

{
    "lastseen": "",
    "description": "TSPortal is the WikiTide Foundation\u2019s in-house platform used by the Trust and Safety team to manage reports, investigations, appeals, and transparency work. Prior to version 34, a flaw in TSPortal allowed attackers to create arbitrary user records in the database by abusing validation logic. While validation correctly rejected invalid usernames, a side effect within a validation rule caused user records to be created regardless of whether the request succeeded. This could be exploited to cause uncontrolled database growth, leading to a potential denial of service (DoS). Version 34 contains a fix for the issue.",
    "published": "2026-03-26T20:27:05.840Z",
    "modified": "2026-03-27T20:01:35.174Z",
    "type": "cve",
    "title": "TSPortal's Uncontrolled User Creation via Validation Side Effects Leads to Potential Denial of Service",
    "source": "GitHub_M",
    "references": "https://github.com/miraheze/TSPortal/security/advisories/GHSA-f346-8rp3-4h9h",
    "id": "CVE-2026-33541",
    "bulletinFamily": "",
    "cwe": [
        "CWE-400",
        "CWE-770"
    ],
    "cvelist": null,
    "sourceData": "miraheze TSPortal < 34",
    "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": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "TSPortal",
    "version": "< 34",
    "vendor": "miraheze",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}