Search/CVE-2026-103439
● CVE

CVE-2026-103439

DiscoveredSep 30, 2026UpdatedSep 30, 2026

Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Wikbase extension allows Cross-Site Scripting (XSS). This issue affects MediaWiki Wikbase extension: 1.46, 1.45, and 1.43.

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CVSS v3.1
—
EPSS
0.11%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Oct 2, 2026 → Oct 3, 2026
▼ 0.04pp
0.14% → 0.11% over 2 tracked changes
Connections
1 relationships
Timeline
disclosure → media coverage
Sep 30, 2026
Disclosure — published as a CVE record.