CVE-2026-20102
Last modified
CVE-2026-20102 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| 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 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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