CVE-2024-23176CWE-79cross-site-scripting

CVE-2024-23176

Medium · published September 14, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
10.5
In the wild
Unconfirmed
What it is

An issue was discovered in the MassMessage extension in MediaWiki before 1.40.2. For a Special:MassMessage?uselang=x-xss URL, the i18n key massmessage-form-page-help allows XSS.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00209 · 10.5th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-14T11:17Z
References (3)
https://lists.wikimedia.org/hyperkitty/list/[email protected]/message/TDBUBCCOQJUT4SCHJNPHKQNPBUUETY52/ · [email protected]https://phabricator.wikimedia.org/T347742 · [email protected]https://phabricator.wikimedia.org/T347742 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 15 SEP 03:14Z
    EPSS moved — → 0%
    epss
  • 14 SEP 00:00Z
    An issue was discovered in the MassMessage extension in MediaWiki before 1.40.2
    cvelistv5