CVE-2026-58035CWE-79

Stored XSS through a system message in the codex version of Special:Block

published July 1, 2026

CVSS v4.0
0.0
EPSS
0%
Percentile
20.1
In the wild
Unconfirmed
What it is

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki.

This vulnerability is associated with program files resources/src/mediawiki.Special.Block/SpecialBlock.Vue.

The record
Technical detail
CVSS v4.0
0.0 · NONE
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00287 · 20.1th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-07-01T14:17Z
EPSS history
Timeline
  • 01 JUL 14:17Z
    Stored XSS through a system message in the codex version of Special:Block
    cvelistv5