CVE-2023-37255

MEDIUM

MediaWiki < 1.39.3 - Cross-Site Scripting via User-Agent HTTP Header

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 6.1
EPSS 0.0011
EPSS Percentile 29.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
mediawiki/mediawiki < 1.39.3
Published Jun 29, 2023
Tracked Since Feb 18, 2026