What is CVE-2026-53592?

CVE-2026-53592 is a medium-severity vulnerability in Freescout-help-desk Freescout, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 4.6/10. Published 2026-07-20.

How severe is CVE-2026-53592?

Medium severity. CVSS v3 base score is 4.6 out of 10.

Prototype Pollution in Freescout-help-desk Freescout

CVE-2026-53592

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. A Prototype Pollution condition in the `getQueryParam` function `/public/js/main.js` and was addressed in version 1.8.139 by blocking URL query keys matchin…

Vulnerability class: Prototype Pollution

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L.

Affected products

Freescout-help-desk Freescout — versions < 1.8.223

Weakness classification (CWE)

CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-53592?: CVE-2026-53592 is a medium-severity vulnerability in Freescout-help-desk Freescout, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 4.6/10. Published 2026-07-20.
How severe is CVE-2026-53592?: Medium severity. CVSS v3 base score is 4.6 out of 10.