{"id":"CVE-2026-33541","state":"PUBLISHED","title":"TSPortal's Uncontrolled User Creation via Validation Side Effects Leads to Potential Denial of Service","description":"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.","publishedAt":"2026-03-26T20:27:05.840Z","updatedAt":"2026-03-27T20:01:35.174Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["miraheze TSPortal"],"affected":[{"vendor":"miraheze","product":"TSPortal","versions":[{"version":"< 34","status":"affected"}]}],"references":["https://github.com/miraheze/TSPortal/security/advisories/GHSA-f346-8rp3-4h9h"],"weaknesses":["CWE-400","CWE-770"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/33xxx/CVE-2026-33541.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33541","state":"PUBLISHED","datePublished":"2026-03-26T20:27:05.840Z","dateUpdated":"2026-03-27T20:01:35.174Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-20T18:05:11.832Z"},"containers":{"cna":{"title":"TSPortal's Uncontrolled User Creation via Validation Side Effects Leads to Potential Denial of Service","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"miraheze","product":"TSPortal","versions":[{"version":"< 34","status":"affected"}]}],"references":[{"url":"https://github.com/miraheze/TSPortal/security/advisories/GHSA-f346-8rp3-4h9h","name":"https://github.com/miraheze/TSPortal/security/advisories/GHSA-f346-8rp3-4h9h","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-26T20:27:05.840Z"},"source":{"advisory":"GHSA-f346-8rp3-4h9h","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-27T19:52:08.746386Z","id":"CVE-2026-33541","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-27T20:01:35.174Z"}}]}}}