Cross-Site Scripting Vulnerability in Cisco Webex Meetings
CVE-2026-20233

6.1MEDIUM

Key Information:

Vendor

Cisco
Status
Cisco Webex Meetings
Vendor
CVE Published:
3 June 2026

Badges

👾 Exploit Exists

What is CVE-2026-20233?

A vulnerability in the web-based user interface of Cisco Webex Meetings could have allowed unauthenticated remote attackers to carry out cross-site scripting (XSS) attacks. This issue stemmed from inadequate validation of user input. By luring users to click on a malicious link, an attacker could exploit this weakness to execute arbitrary script code in the victim's browser or access sensitive information stored in the browser. Cisco has proactively addressed this vulnerability, ensuring that no customer action is required.

Affected Version(s)

Cisco Webex Meetings 39.7.7

Cisco Webex Meetings 39.9

Cisco Webex Meetings 40.4.10

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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