CVE-2023-37255

PoC —

CVSS 3.1

6.1 medium

EPSS

<1%p39

Published

Jun 29, 2023 (Jun 29, 2023)

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.

Vendors: mediawiki
Products: mediawiki
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.5%)

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