The following table lists the changes that have been made to the
CVE-2025-53480 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.
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New CVE Received
by c4f26cc8-17ff-4c99-b5e2-38fc1793eaccJul. 08, 2025
Action Type Old Value New Value Added Description The CheckUser extension’s Special:Investigate page has a vulnerability in the Account information tab, where specific internationalized messages are rendered without proper escaping. Attackers can exploit this by appending ?uselang=x-xss to the URL, causing reflected XSS when the UI renders affected message keys. This issue affects Mediawiki – CheckUser extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
Added CWE CWE-79 Added Reference https://gerrit.wikimedia.org/r/q/I777fc55fef15c3b00df0db268af2b64cb2d6e381 Added Reference https://phabricator.wikimedia.org/T394700