CVE-2026-20102

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

6.1 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-saml-LktTrwZP Vendor Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
History

16 Apr 2026, 20:28

Type Values Removed Values Added
References () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-saml-LktTrwZP - () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-saml-LktTrwZP - Vendor Advisory
Summary
  • (es) Una vulnerabilidad en la función de inicio de sesión único (SSO) SAML 2.0 de Cisco Secure Firewall ASA Software y Cisco Secure Firewall Threat Defense (FTD) Software podría permitir a un atacante remoto no autenticado realizar un ataque de cross-site scripting (XSS) contra la función SAML y acceder a información sensible basada en el navegador. Esta vulnerabilidad se debe a una validación de entrada insuficiente de múltiples parámetros HTTP. Un atacante podría explotar esta vulnerabilidad persuadiendo a un usuario para que acceda a un enlace malicioso. Un exploit exitoso podría permitir al atacante realizar un ataque XSS reflejado a través de un dispositivo afectado.
First Time Cisco firepower Threat Defense Software
Cisco
Cisco adaptive Security Appliance Software
CPE cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*

04 Mar 2026, 18:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-04 18:16

Updated : 2026-04-16 20:28

NVD link : CVE-2026-20102

Mitre link : CVE-2026-20102

CVE.ORG link : CVE-2026-20102

JSON object : View

Products Affected

cisco

  • firepower_threat_defense_software
  • adaptive_security_appliance_software
CWE
CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')