CVE-2026-77607
Medium
Description
Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki's pages. Prior to version 7.2.0, `sep` was inserted verbatim into HTML cell joins. This made it possible to inject HTML through the separator value. Version 7.2.0 fixes the issue.
SeverityMedium
CVSS6.1
Exploit probability—
ProductMediawiki/semantic-media-wiki
PublishedSep 18, 2026
First seenSep 18, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- mediawiki/semantic-media-wiki7.2.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mediawiki/semantic-media-wikiPackagist | v < 7.2.0 | 7.2.0 |
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