What’s Vulnerable › Vulnerabilities

CVE-2020-21056

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% 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-22

Description

Directory Traversal vulnerability exists in FusionPBX 4.5.7, which allows a remote malicious user to create folders via the folder variale to app\edit\foldernew.php.

Affected products

• fusionpbx: 4.5.7

References

• https://github.com/fusionpbx/fusionpbx/commit/cad71240dee2a82cd5766dd67039a87849031aaa
• https://resp3ctblog.wordpress.com/2019/10/28/fusionpbx-path-traversal-5/
• https://github.com/fusionpbx/fusionpbx/commit/cad71240dee2a82cd5766dd67039a87849031aaa
• https://resp3ctblog.wordpress.com/2019/10/28/fusionpbx-path-traversal-5/

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