En bref
- CVE-2026-77607 est une vulnérabilité MOYENNE (CVSS 6.1) touchant mediawiki/semantic-media-wiki.
- Probabilité d'exploitation dans les 30 prochains jours (EPSS) : 0.28%, plus élevée que 20.9% des vulnérabilités.
- Correctif : mettre à jour vers 7.2.0 ou plus récent.
Description
Failure mode
sep was inserted verbatim into the HTML that joins a table cell's values. This made it possible to inject HTML through the separator value. The same unsanitised table HTML is produced both for the standard Special:Ask render and for its raw request output (request_type=raw), so the injection was reachable without authentication.
Remediation
- In all non-wiki output modes (HTML, raw request, file),
sep is escaped unless it is a safe <br> variant.
- This preserves legitimate line-break separators while blocking markup injection.
Maintenance note
If the table renderer ever gains richer separator semantics, keep the whitelist explicit. Do not expand the allowed HTML surface casually.
NVD 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.
Autres vulnérabilités de mediawiki/semantic-media-wiki
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