CVE-2026-88593CWE-79cross-site-scripting

CVE-2026-88593

Medium · published September 16, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
15.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00253 · 15.9th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-16T22:17Z
References (2)
https://github.com/sg-summer/cve/issues/3 · [email protected]https://github.com/sg-summer/cve/issues/3 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 18 SEP 04:02Z
    EPSS moved — → 0%
    epss
  • 16 SEP 00:00Z
    kkFileView 5.0.0 through 5.0.2 allows reflected XSS via the /onlinePreview endpoint
    cvelistv5