CVE-2026-20149

A vulnerability in Cisco Webex could have allowed an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack. Cisco has addressed this vulnerability, and no customer action is needed. This vulnerability was due to improper filtering of user-supplied input. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by persuading a user to follow a malicious link. A successful exploit could have allowed the attacker to conduct an XSS attack against the targeted user.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

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-webex-xss-TZFTbbwN	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:cisco:webex:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-04 18:16

Updated : 2026-03-09 17:52

NVD link : CVE-2026-20149

Mitre link : CVE-2026-20149

CVE.ORG link : CVE-2026-20149

JSON object : View

Products Affected

cisco

webex

CWE

CWE-79

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

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