---
title: "CVE-2026-88592: kkFileView - Server-Side Request Forgery"
description: "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."
url: https://panop.io/threat-heartbeat/CVE-2026-88592/
---

# 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-88592)

## 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](https://cwe.mitre.org/data/definitions/345.html)

## 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

- [https://nvd.nist.gov/vuln/detail/CVE-2026-88592](https://nvd.nist.gov/vuln/detail/CVE-2026-88592)
- [https://github.com/sg-summer/cve/issues/2](https://github.com/sg-summer/cve/issues/2)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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