All vulnerabilities
CVE-2026-103443

MediaWiki Collection (Book) extension: API permits session-seeded javascript URL XSS

The Wikimedia Foundation MediaWiki Collection (Book) extensionApplications & CMS
Open in ThreatlineRecord JSON
CVSS
1.1Low
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.20%Chance of exploitation activity in the next 30 days, higher than 9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version yet
Published30 Sep 2026Updated 30 Sep 2026CVE List

What fixes it

No source in this snapshot names a fixed version.

Description

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.

Text from CVE List

Affected versions 3

  • MediaWiki Collection (Book) extensionaffected: 1.46CVE List
  • MediaWiki Collection (Book) extensionaffected: 1.45CVE List
  • MediaWiki Collection (Book) extensionaffected: 1.43CVE List

References 2