What’s Vulnerable › Vulnerabilities

CVE-2020-21053

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-20 · updated 2026-06-17
• Weakness: CWE-79

Description

Cross Site Scriptiong (XSS) vulnerability exists in FusionPBX 4.5.7 allows remote malicious users to inject arbitrary web script or HTML via an unsanitized "query_string" variable in app\devices\device_imports.php.

Affected products

• fusionpbx: 4.5.7

References

• https://github.com/fusionpbx/fusionpbx/commit/2ce613f1e9fe8ffab7a4cb9d1384444622285335
• https://resp3ctblog.wordpress.com/2019/10/28/fusionpbx-xss-22/
• https://github.com/fusionpbx/fusionpbx/commit/2ce613f1e9fe8ffab7a4cb9d1384444622285335
• https://resp3ctblog.wordpress.com/2019/10/28/fusionpbx-xss-22/

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