MEDIUM 5.1 NVD
CVE-2026-104461
YesWiki before 4.6.7 contains a stored cross-site scripting vulnerability in the Bazar FileField, which validates only the upload's file extension and never cal
YesWiki before 4.6.7 contains a stored cross-site scripting vulnerability in the Bazar FileField, which validates only the upload's file extension and never calls HtmlPurifierService::cleanFile, so SVG files are stored verbatim and served inline as image/svg+xml. Authenticated users can submit entries via POST /api/entries/{formId} with SVG files containing script that executes in the wiki origin when the file is opened, enabling administrator session or account compromise.
References
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-67v5-7pfv-pp9m
- https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-stored-xss-via-unsanitized-svg-u
This medium severity vulnerability with a CVSS score of 5.1 was published on 2026-10-02 via NVD.
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