CVE-2020-21054

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CVSS 3.1

6.1 medium

EPSS

<1%p52

Published

May 20, 2021 (May 20, 2021)

Modified

Jun 17, 2026

Description

Cross Site Scripting (XSS) vulnerability in FusionPBX 4.5.7 allows remote malicious users to inject arbitrary web script or HTML via an unsanitized "f" variable in app\vars\vars_textarea.php.

Vendors: fusionpbx
Products: fusionpbx
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.7%)

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