CVE-2026-20233
Last modified
CVE-2026-20233 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. EPSS estimates a 0.18% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Webex Meetings | 39.6.0 |
| Cisco | Webex Meetings | 39.7.0 |
| Cisco | Webex Meetings | 39.7.4 |
| Cisco | Webex Meetings | 39.7.7 |
| Cisco | Webex Meetings | 39.8.0 |
| Cisco | Webex Meetings | 39.8.2 |
| Cisco | Webex Meetings | 39.8.3 |
| Cisco | Webex Meetings | 39.8.4 |
| Cisco | Webex Meetings | 39.9.0 |
| Cisco | Webex Meetings | 39.9.1 |
| Cisco | Webex Meetings | 39.10.0 |
| Cisco | Webex Meetings | 39.11.0 |
| Cisco | Webex Meetings | 40.1.0 |
| Cisco | Webex Meetings | 40.2.0 |
| Cisco | Webex Meetings | 40.4.0 |
| Cisco | Webex Meetings | 40.4.10 |
| Cisco | Webex Meetings | 40.6.0 |
| Cisco | Webex Meetings | 40.6.2 |
| Cisco | Webex Meetings | 42.6.0 |
| Cisco | Webex Meetings | 42.7.0 |
| Cisco | Webex Meetings | 42.8.0 |
| Cisco | Webex Meetings | 42.9.0 |
| Cisco | Webex Meetings | 42.10.0 |
| Cisco | Webex Meetings | 42.11.0 |
| Cisco | Webex Meetings | 42.12.0 |
| Cisco | Webex Meetings | 43.1.0 |
| Cisco | Webex Meetings | 43.2.0 |
| Cisco | Webex Meetings | 43.3.0 |
| Cisco | Webex Meetings | 43.4.0 |
| Cisco | Webex Meetings | 43.4.1 |
| Cisco | Webex Meetings | 43.4.2 |
| Cisco | Webex Meetings | 43.5.0 |
| Cisco | Webex Meetings | 43.6.0 |
| Cisco | Webex Meetings | 43.6.1 |
| Cisco | Webex Meetings | 43.7.0 |
| Cisco | Webex Meetings | 43.8.0 |
| Cisco | Webex Meetings | 43.9.0 |
| Cisco | Webex Meetings | 43.10.0 |
| Cisco | Webex Meetings | 43.11.0 |
| Cisco | Webex Meetings | 43.12.0 |
| Cisco | Webex Meetings | 44.1.0 |
| Cisco | Webex Meetings | 44.2.0 |
| Cisco | Webex Meetings | 44.3.0 |
| Cisco | Webex Meetings | 44.4.0 |
| Cisco | Webex Meetings | 44.5.0 |
| Cisco | Webex Meetings | 44.6.0 |
| Cisco | Webex Meetings | 44.7.0 |
| Cisco | Webex Meetings | 44.8.0 |
| Cisco | Webex Meetings | 44.9.0 |
| Cisco | Webex Meetings | 44.10.0 |
Showing 50 of 56 affected configurations. See NVD for the full list.
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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