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.
Metrics
Affected Vendors & Products
Advisories
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Fixes
Solution
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Workaround
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References
History
Fri, 02 Oct 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | YesWiki before 4.6.7 Stored XSS via Unsanitized SVG Upload in Bazar FileField | |
| First Time appeared |
Yeswiki
Yeswiki yeswiki |
|
| Weaknesses | CWE-79 | |
| CPEs | cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Yeswiki
Yeswiki yeswiki |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-02T11:38:29.623Z
Reserved: 2026-10-02T00:55:11.982Z
Link: CVE-2026-104461
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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Weaknesses