CVE-2026-58032CWE-79

mw.Api.getErrorMessage() may return injected HTML if used without errorformat=html

Medium · published July 1, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
21.5
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.Api/index.Js.

This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00299 · 21.5th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-07-01T14:56Z
EPSS history
Timeline
  • 01 JUL 14:56Z
    mw.Api.getErrorMessage() may return injected HTML if used without errorformat=html
    cvelistv5