CVE-2026-103443CWE-80

CVE-2026-103443

published September 30, 2026

CVSS
1.1
EPSS
0%
Percentile
9.4
In the wild
Unconfirmed
What it is

Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Collection (Book) extension allows XSS Targeting Non-Script Elements.

This issue affects MediaWiki Collection (Book) extension: 1.46, 1.45, and 1.43.

The record
Technical detail
CVSS
1.1 · NONE
CVSS v4.0
1.1 · CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
EPSS
0.00201 · 9.4th percentile
Weakness
CWE-80 · Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Published
2026-09-30T21:16Z
References (2)
https://gerrit.wikimedia.org/r/q/I51d973d4ace99fb6e584296f296efb0ff50339ce · c4f26cc8-17ff-4c99-b5e2-38fc1793eacchttps://phabricator.wikimedia.org/T435822 · c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
EPSS history
Timeline
  • 02 OCT 03:41Z
    EPSS moved — → 0%
    epss
  • 30 SEP 16:19Z
    API permits session-seeded javascript URL XSS
    cvelistv5