Vulnerability · Published Oct 17, 2025 · Assigned by wikimedia-foundation
CVE-2025-62654Stored XSS through system messages in QuizGame
Low 2.0
In plain English
A low-severity cross-site scripting in MediaWiki QuizGame extension from The Wikimedia Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).
Severity (CVSS 4.0)2.0Low
Exploit odds (30 days)0.3%top 76.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation MediaWiki QuizGame extension allows Stored XSS.This issue affects MediaWiki QuizGame extension: 1.39, 1.43, 1.44.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The Wikimedia Foundation | MediaWiki QuizGame extension | 1.391.431.44 |
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/S:N/AU:N/R:U/V:C/RE:M/U:Amber