CVE-2026-104461
YesWiki before 4.6.7 Stored XSS via Unsanitized SVG Upload in Bazar FileField
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | yeswiki |
| Product | yeswiki |
| Published | Oct 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
YesWiki / yeswiki
0 < 4.6.7
References
Credits
🔍 kaimandalic