What’s Vulnerable › Vulnerabilities

CVE-2019-16971

• 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: 2019-10-22 · updated 2026-06-17
• Weakness: CWE-79

Description

In FusionPBX up to 4.5.7, the file app\messages\messages_thread.php uses an unsanitized "contact_uuid" variable coming from the URL, which is reflected on 3 occasions in HTML, leading to XSS.

Affected products

• fusionpbx: through 4.5.7

References

• https://github.com/fusionpbx/fusionpbx/commit/c48a160af53352ad1a43518b7d0faab16b8dfbcc
• https://resp3ctblog.wordpress.com/2019/10/19/fusionpbx-xss-4/
• https://github.com/fusionpbx/fusionpbx/commit/c48a160af53352ad1a43518b7d0faab16b8dfbcc
• https://resp3ctblog.wordpress.com/2019/10/19/fusionpbx-xss-4/

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