Riskcovery

CVE-2026-20233

Cisco Webex Meetings Cross-Site Scripting Vulnerability

State
Published
Severity
6.1 Medium
Published
Jun 3, 2026
Updated
Jun 3, 2026
Reserved
Oct 8, 2025

Read the record on cve.org

Description

A vulnerability in the web-based user interface of Cisco Webex Meetings could have allowed an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack. Cisco has addressed this vulnerability in the Webex Meetings service, and no customer action is needed.

This vulnerability existed because of insufficient validation of user 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 execute arbitrary script code in the browser of the targeted user or access sensitive, browser-based information.

Scores

CVSSScoreVectorSource
3.16.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Ncisco

Weaknesses

  • CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

ProductVersions
Cisco Webex MeetingsCisco
  • 39.7.7Affected
  • 39.9Affected
  • 40.4.10Affected
  • 39.6Affected
  • 40.6.2Affected
  • 39.8.2Affected
  • 39.8.4Affected
  • 40.1Affected
  • 39.11Affected
  • 39.7.4Affected
  • 39.9.1Affected
  • 40.4Affected
  • 40.6Affected
  • 39.7Affected
  • 39.8Affected
  • 39.8.3Affected
  • 40.2Affected
  • 39.10Affected
  • 42.6Affected
  • 42.7Affected
  • 42.8Affected
  • 42.9Affected
  • 42.10Affected
  • 42.11Affected
  • 42.12Affected
  • and 31 more versions

References

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