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CVE-2026-20233

Cisco Webex Meetings Cross-Site Scripting Vulnerability

Published
Last modified
published
Not listed in CISA KEV
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Cisco Cisco Webex Meetings

    39.7.7, 39.9, 40.4.10, 39.6, 40.6.2, 39.8.2, 39.8.4, 40.1, 39.11, 39.7.4, 39.9.1, 40.4, 40.6, 39.7, 39.8, 39.8.3, 40.2, 39.10, 42.6, 42.7, 42.8, 42.9, 42.10, 42.11, 42.12, 43.1, 43.2, 43.3, 43.4, 43.4.1, and 26 more

References 1

sec.cloudapps.cisco.com