CVE-2026-20102

A vulnerability in the SAML 2.0 single sign-on (SSO) feature of Cisco Secure Firewall ASA Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against the SAML feature and access sensitive, browser-based information. This vulnerability is due to insufficient input validation of multiple HTTP parameters. An attacker could exploit this vulnerability by persuading a user to access a malicious link. A successful exploit could allow the attacker to conduct a reflected XSS attack through an affected device.

• cisco adaptive security appliance software (>= 9.16.1 < 9.16.4.89) • cisco adaptive security appliance software (>= 9.17.1 < 9.18.4.71) • cisco adaptive security appliance software (>= 9.20.1 < 9.20.4.19) • cisco adaptive security appliance software (>= 9.22.1.1 < 9.22.2.32) • cisco adaptive security appliance software (>= 9.23.1 < 9.23.1.26) • cisco secure firewall threat defense (>= 7.0.0 < 7.0.9) • cisco secure firewall threat defense (>= 7.1.0 < 7.2.11) • cisco secure firewall threat defense (>= 7.4.0 < 7.4.3) • cisco secure firewall threat defense (>= 7.6.0 < 10.0.0)