CVE-2026-33541 MEDIUM

CVE-2026-33541: TSPortal's Uncontrolled User Creation via Validation Side Effects Leads to Potential Denial of Service

Vendor Miraheze
Product TSPortal
Weakness CWE-400
Published March 26, 2026
Last update March 27, 2026

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 26, 2026 CVE published
March 27, 2026 Record updated