All vulnerabilities
CVE-2026-100383

Stored i18n XSS in WikiLambda's VisualEditor integration

Wikimedia Foundation Mediawiki - WikiLambda ExtensionApplications & CMS
Open in ThreatlineRecord JSON
CVSS
4.8Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.32%Chance of exploitation activity in the next 30 days, higher than 23% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version yet
Published25 Sep 2026Updated 26 Sep 2026CVE List

What fixes it

No source in this snapshot names a fixed version.

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension allows Cross-Site Scripting (XSS).

This issue affects Mediawiki - WikiLambda Extension: 1.47.0-alpha. The issue has been remediated on the master branch.

Text from CVE List

Affected versions 1

  • Mediawiki - WikiLambda Extensionaffected: 1.47.0-alphaCVE List

References 2