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

Severity
Medium 6.1
CVSS 3.1
Exploited
Not listed
EPSS
0.002
14.5th percentile
Discovered by
Third party
Published by the vendor
Published
Mar 4, 2026
Assigned by cisco

Description

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.

Weakness: CWE-79

Affected products

Vendor Product Category Matched by
Cisco Cisco Webex Other Products cna-assigner
Vendor-reported affected versions (1)
  • Cisco · Cisco Webex Meetings