CVE-2021-31551

MEDIUM

MediaWiki < 1.35.2 - Cross-Site Scripting via PageForms Token Query Parameters

Title source: llm
STIX 2.1

Description

An issue was discovered in the PageForms extension for MediaWiki through 1.35.2. Crafted payloads for Token-related query parameters allowed for XSS on certain PageForms-managed MediaWiki pages.

References (4)

Core 4
Core References
Third Party Advisory x_refsource_misc
https://phabricator.wikimedia.org/T259433
Issue Tracking, Third Party Advisory x_refsource_misc
https://gerrit.wikimedia.org/r/q/Ibe68b070ee791cd0c8e7f50eb04ac4e066b1512c
Issue Tracking, Third Party Advisory x_refsource_misc
https://gerrit.wikimedia.org/r/q/I5e0abbc2f80e6bda255b3b32a4df39a7fe7d3793
Issue Tracking, Third Party Advisory x_refsource_misc
https://gerrit.wikimedia.org/r/q/I20b63bd38779d2ccbe2d86f9879df85ca3b685f6

Scores

CVSS v3 6.1
EPSS 0.0022
EPSS Percentile 45.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
mediawiki/mediawiki < 1.35.2
Published Apr 22, 2021
Tracked Since Feb 18, 2026