CVE-2026-88593

6.1 mediumEPSS 0.3%

Medium (6.1). EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 16% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-09-16
Modified: 2026-09-22
Record from: the NVD, synced 2026-10-19

References

https://github.com/sg-summer/cve/issues/3
https://github.com/sg-summer/cve/issues/3

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