CVE-2026-88592 kkFileView - Server-Side Request Forgery

kkFileView >= 4.2.0 contains a server-side request forgery caused by inconsistent URL parameter validation in the /getCorsFile endpoint, letting attackers fetch arbitrary URLs server-side, exploit requires crafted request with specific parameters.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.21% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Server-Side Request Forgery
Impact
Server Side Request Forgery, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
16 September 2026
Updated
15 October 2026
Weakness
CWE-345

Vendor fix

Update to the latest version with fixed parameter validation logic.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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