CVE-2026-20178

A vulnerability in the browser-based version of Cisco Webex App could have allowed an unauthenticated, remote attacker to redirect users to a malicious webpage. Cisco has addressed this vulnerability in the Cisco Webex App, and no customer action is needed. This vulnerability existed due to improper input validation of URL parameters in an HTTP request. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by persuading a user to click a crafted URL. A successful exploit could have allowed the attacker to redirect a user to a malicious website.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-app-redirect-KOyxhffH	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:cisco:webex_web_app:-:*:*:*:*:-:*:*

History

26 Oct 2026, 11:10

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad en la versión basada en navegador de Cisco Webex App podría haber permitido a un atacante remoto no autenticado redirigir a los usuarios a una página web maliciosa. Cisco ha abordado esta vulnerabilidad en la Cisco Webex App, y no se requiere ninguna acción por parte del cliente. Esta vulnerabilidad existía debido a una validación de entrada incorrecta de los parámetros URL en una solicitud HTTP. Antes de que esta vulnerabilidad fuera abordada, un atacante podría haber explotado esta vulnerabilidad al persuadir a un usuario para hacer clic en una URL manipulada. Un exploit exitoso podría haber permitido al atacante redirigir a un usuario a un sitio web malicioso.

Information

Published : 2026-06-17 18:17

Updated : 2026-10-26 11:10

NVD link : CVE-2026-20178

Mitre link : CVE-2026-20178

CVE.ORG link : CVE-2026-20178

JSON object : View

Products Affected

cisco

webex_web_app

CWE

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

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