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.
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Fixes

Solution

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Workaround

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References
History

Thu, 24 Sep 2026 04:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 22 Sep 2026 19:15:00 +0000

Type Values Removed Values Added
Title Reflected XSS Vulnerability via /onlinePreview in kkFileView

Tue, 22 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}


Fri, 18 Sep 2026 11:30:00 +0000

Type Values Removed Values Added
Title Reflected XSS Vulnerability via /onlinePreview in kkFileView
Weaknesses CWE-79

Wed, 16 Sep 2026 18:00:00 +0000

Type Values Removed Values Added
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.
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-22T15:17:34.592Z

Reserved: 2026-09-10T00:00:00.000Z

Link: CVE-2026-88593

cve-icon Vulnrichment

Updated: 2026-09-22T15:16:46.842Z

cve-icon NVD

Status : Deferred

Published: 2026-09-16T18:17:18.913

Modified: 2026-09-22T20:00:03.713

Link: CVE-2026-88593

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-22T19:00:13Z

Weaknesses