CVE-2026-20059: A vulnerability in the web-based management interface of Cisco Unity Connection could allow an unauthenticated, remote…
CVE-2026-20059 · Severity: medium · CVSS 6.1 · Published 2026-04-15
A vulnerability in the web-based management interface of Cisco Unity Connection could allow an unauthenticated, remote attacker to conduct a reflected XSS attack against a user of the interface.
This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.
No. Junglewise Threat Intelligence has no report of CVE-2026-20059 being exploited in the wild.
How severe is CVE-2026-20059?
Medium severity, with a CVSS score of 6.1, published 15 April 2026.
Which products and versions are affected?
Cisco Unity Connection. The advisory does not name versions.
Is there a fix for CVE-2026-20059?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-20059?
Check whether you run Cisco Unity Connection. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.