Home

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.

PUBLISHED Reserved 2025-10-08 | Published 2026-03-04 | Updated 2026-03-04 | Assigner cisco




MEDIUM: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Problem types

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

Product status

Any version
affected

References

sec.cloudapps.cisco.com/...isory/cisco-sa-webex-xss-TZFTbbwN (cisco-sa-webex-xss-TZFTbbwN)

cve.org (CVE-2026-20149)

nvd.nist.gov (CVE-2026-20149)

Download JSON