CVE-2026-88593
Medium
Description
kkFileView 5.0.0 through 5.0.2 allows reflected XSS via the /onlinePreview endpoint. The OnlinePreviewController passes the user-controlled page and kkagent request parameters to FreeMarker templates without sanitization, and the templates insert these values into raw JavaScript contexts.
SeverityMedium
CVSS6.1
Exploit probability17. percentile0.3%
ProductkkFileView
PublishedSep 16, 2026
First seenSep 16, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| kkFileView | 5.0.0 ≤ v ≤ 5.0.2 | — |
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