CVE-2021-37524

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-07-01 · updated 2026-06-17
Weakness: CWE-79

Description

Cross Site Scripting (XSS) vulnerability in FusionPBX 4.5.26 allows remote unauthenticated users to inject arbitrary web script or HTML via an unsanitized "path" parameter in resources/login.php.

Affected products

fusionpbx: before 5.0.1 — fixed in 5.0.1

How to fix

Upgrade to a fixed version: fusionpbx 5.0.1. Check the vendor advisory for mitigations.

References

https://github.com/fusionpbx/fusionpbx/commit/c3b811393de63e324eaa64fe5c9ea3fce428fe1a
https://www.fusionpbx.com/app/tickets/ticket_edit.php?id=4a0666cd-8c12-46ae-bc0a-02f007b62cdb
https://github.com/fusionpbx/fusionpbx/commit/c3b811393de63e324eaa64fe5c9ea3fce428fe1a
https://www.fusionpbx.com/app/tickets/ticket_edit.php?id=4a0666cd-8c12-46ae-bc0a-02f007b62cdb

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