Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
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-unsanit
FAQ
What is CVE-2026-104461?
CVE-2026-104461 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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 SV...
How severe is CVE-2026-104461?
CVE-2026-104461 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-104461?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.