CVE-2023-37255

MediumCVSS 6.1/10Last modified Jun 17, 2026

Description

An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. In Special:CheckUser, a check of the "get edits" type is vulnerable to HTML injection through the User-Agent HTTP request header.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://phabricator.wikimedia.org/T333569Exploit, Issue Tracking
https://phabricator.wikimedia.org/T333569Exploit, Issue Tracking

Timeline

Published: Jun 29, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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