{"id":"CVE-2026-33541","summary":"TSPortal's Uncontrolled User Creation via Validation Side Effects Leads to Potential Denial of Service","details":"TSPortal is the WikiTide Foundation’s 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.","aliases":["GHSA-f346-8rp3-4h9h"],"modified":"2026-04-02T13:27:53.499240Z","published":"2026-03-26T20:27:05.840Z","database_specific":{"cwe_ids":["CWE-400","CWE-770"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33541.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33541.json"},{"type":"ADVISORY","url":"https://github.com/miraheze/TSPortal/security/advisories/GHSA-f346-8rp3-4h9h"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33541"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/miraheze/tsportal","events":[{"introduced":"0"},{"fixed":"922d04a271005370dbac5974b8b241470725bbc0"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"34"}]}}],"versions":["v1","v10","v11","v12","v13","v14","v15","v16","v17","v18","v19","v2","v20","v21","v22","v23","v24","v25","v26","v27","v28","v29","v3","v30","v31","v32","v33","v4","v5","v6","v7","v8","v9"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33541.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}