Resource exhaustion in Miraheze Tsportal
CVE-2026-33541
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (36.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.002
Affected products
- Miraheze Tsportal — versions < 34
- Wikitide Tsportal
Weakness classification (CWE)
References
- github.com/miraheze/TSPortal/security/advisories/GHSA-f346-8rp3-4h9h (Exploit, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-33541?
- CVE-2026-33541 is a medium-severity vulnerability in Miraheze Tsportal, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-03-26.
- How severe is CVE-2026-33541?
- Medium severity. CVSS v3 base score is 6.5 out of 10.