Server-Side Request Forgery (SSRF) in Cisco Unity Connection - CVE-2026-20035
Published: May 7, 2026
Vulnerability identifier: #VU130418
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-20035
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input in the web UI. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
Affected software
Cisco Unity Connection
How to mitigate CVE-2026-20035
Install updates from vendor's website.
Cisco Unity Connection - addressed in versions 14SU5, 15SU4