Cisco Webex Meetings Cross-Site Scripting Vulnerability
Priority LOW 26CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00184 8th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| 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; 43.4.2; 43.5.0; 43.6.0; 43.6.1; 43.7; 43.8; 43.9; 43.10; 43.11; 43.12; 44.1; 44.2; 44.3; 44.4; 44.5; 44.6; 44.7; 44.8; 44.9; 44.10; 44.11; 44.12; 45.1; 45.2; 45.3; 45.4 | — | No fix listed | CNA |
- Cisco Webex Meetings VendorCisco Affected 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; 43.4.2; 43.5.0; 43.6.0; 43.6.1; 43.7; 43.8; 43.9; 43.10; 43.11; 43.12; 44.1; 44.2; 44.3; 44.4; 44.5; 44.6; 44.7; 44.8; 44.9; 44.10; 44.11; 44.12; 45.1; 45.2; 45.3; 45.4 Fixed in — No fix listed CNA
CPE configurations NVD · 56
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:webex_meetings:39.6.0:*:*:*:*:*:*:* | 39.6.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:39.7.0:*:*:*:*:*:*:* | 39.7.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:39.7.4:*:*:*:*:*:*:* | 39.7.4 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:39.7.7:*:*:*:*:*:*:* | 39.7.7 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:39.8.0:*:*:*:*:*:*:* | 39.8.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:39.8.2:*:*:*:*:*:*:* | 39.8.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:39.8.3:*:*:*:*:*:*:* | 39.8.3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:39.8.4:*:*:*:*:*:*:* | 39.8.4 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:39.9.0:*:*:*:*:*:*:* | 39.9.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:39.9.1:*:*:*:*:*:*:* | 39.9.1 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:webex_meetings:39.6.0:*:*:*:*:*:*:* Versions 39.6.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:39.7.0:*:*:*:*:*:*:* Versions 39.7.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:39.7.4:*:*:*:*:*:*:* Versions 39.7.4 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:39.7.7:*:*:*:*:*:*:* Versions 39.7.7 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:39.8.0:*:*:*:*:*:*:* Versions 39.8.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:39.8.2:*:*:*:*:*:*:* Versions 39.8.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:39.8.3:*:*:*:*:*:*:* Versions 39.8.3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:39.8.4:*:*:*:*:*:*:* Versions 39.8.4 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:39.9.0:*:*:*:*:*:*:* Versions 39.9.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:39.9.1:*:*:*:*:*:*:* Versions 39.9.1 Vulnerable ·Cisco
Show 46 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:webex_meetings:39.10.0:*:*:*:*:*:*:* | 39.10.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:39.11.0:*:*:*:*:*:*:* | 39.11.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:40.1.0:*:*:*:*:*:*:* | 40.1.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:40.2.0:*:*:*:*:*:*:* | 40.2.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:40.4.0:*:*:*:*:*:*:* | 40.4.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:40.4.10:*:*:*:*:*:*:* | 40.4.10 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:40.6.0:*:*:*:*:*:*:* | 40.6.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:40.6.2:*:*:*:*:*:*:* | 40.6.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:42.6.0:*:*:*:*:*:*:* | 42.6.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:42.7.0:*:*:*:*:*:*:* | 42.7.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:42.8.0:*:*:*:*:*:*:* | 42.8.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:42.9.0:*:*:*:*:*:*:* | 42.9.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:42.10.0:*:*:*:*:*:*:* | 42.10.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:42.11.0:*:*:*:*:*:*:* | 42.11.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:42.12.0:*:*:*:*:*:*:* | 42.12.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.1.0:*:*:*:*:*:*:* | 43.1.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.2.0:*:*:*:*:*:*:* | 43.2.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.3.0:*:*:*:*:*:*:* | 43.3.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.4.0:*:*:*:*:*:*:* | 43.4.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.4.1:*:*:*:*:*:*:* | 43.4.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.4.2:*:*:*:*:*:*:* | 43.4.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.5.0:*:*:*:*:*:*:* | 43.5.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.6.0:*:*:*:*:*:*:* | 43.6.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.6.1:*:*:*:*:*:*:* | 43.6.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.7.0:*:*:*:*:*:*:* | 43.7.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.8.0:*:*:*:*:*:*:* | 43.8.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.9.0:*:*:*:*:*:*:* | 43.9.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.10.0:*:*:*:*:*:*:* | 43.10.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.11.0:*:*:*:*:*:*:* | 43.11.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:43.12.0:*:*:*:*:*:*:* | 43.12.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:44.1.0:*:*:*:*:*:*:* | 44.1.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:44.2.0:*:*:*:*:*:*:* | 44.2.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:44.3.0:*:*:*:*:*:*:* | 44.3.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:44.4.0:*:*:*:*:*:*:* | 44.4.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:44.5.0:*:*:*:*:*:*:* | 44.5.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:44.6.0:*:*:*:*:*:*:* | 44.6.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:44.7.0:*:*:*:*:*:*:* | 44.7.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:44.8.0:*:*:*:*:*:*:* | 44.8.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:44.9.0:*:*:*:*:*:*:* | 44.9.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:44.10.0:*:*:*:*:*:*:* | 44.10.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:44.11.0:*:*:*:*:*:*:* | 44.11.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:44.12.0:*:*:*:*:*:*:* | 44.12.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:45.1.0:*:*:*:*:*:*:* | 45.1.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:45.2.0:*:*:*:*:*:*:* | 45.2.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:45.3.0:*:*:*:*:*:*:* | 45.3.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings:45.4.0:*:*:*:*:*:*:* | 45.4.0 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:webex_meetings:39.10.0:*:*:*:*:*:*:* Versions 39.10.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:39.11.0:*:*:*:*:*:*:* Versions 39.11.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:40.1.0:*:*:*:*:*:*:* Versions 40.1.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:40.2.0:*:*:*:*:*:*:* Versions 40.2.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:40.4.0:*:*:*:*:*:*:* Versions 40.4.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:40.4.10:*:*:*:*:*:*:* Versions 40.4.10 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:40.6.0:*:*:*:*:*:*:* Versions 40.6.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:40.6.2:*:*:*:*:*:*:* Versions 40.6.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:42.6.0:*:*:*:*:*:*:* Versions 42.6.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:42.7.0:*:*:*:*:*:*:* Versions 42.7.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:42.8.0:*:*:*:*:*:*:* Versions 42.8.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:42.9.0:*:*:*:*:*:*:* Versions 42.9.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:42.10.0:*:*:*:*:*:*:* Versions 42.10.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:42.11.0:*:*:*:*:*:*:* Versions 42.11.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:42.12.0:*:*:*:*:*:*:* Versions 42.12.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.1.0:*:*:*:*:*:*:* Versions 43.1.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.2.0:*:*:*:*:*:*:* Versions 43.2.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.3.0:*:*:*:*:*:*:* Versions 43.3.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.4.0:*:*:*:*:*:*:* Versions 43.4.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.4.1:*:*:*:*:*:*:* Versions 43.4.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.4.2:*:*:*:*:*:*:* Versions 43.4.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.5.0:*:*:*:*:*:*:* Versions 43.5.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.6.0:*:*:*:*:*:*:* Versions 43.6.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.6.1:*:*:*:*:*:*:* Versions 43.6.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.7.0:*:*:*:*:*:*:* Versions 43.7.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.8.0:*:*:*:*:*:*:* Versions 43.8.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.9.0:*:*:*:*:*:*:* Versions 43.9.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.10.0:*:*:*:*:*:*:* Versions 43.10.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.11.0:*:*:*:*:*:*:* Versions 43.11.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:43.12.0:*:*:*:*:*:*:* Versions 43.12.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:44.1.0:*:*:*:*:*:*:* Versions 44.1.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:44.2.0:*:*:*:*:*:*:* Versions 44.2.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:44.3.0:*:*:*:*:*:*:* Versions 44.3.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:44.4.0:*:*:*:*:*:*:* Versions 44.4.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:44.5.0:*:*:*:*:*:*:* Versions 44.5.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:44.6.0:*:*:*:*:*:*:* Versions 44.6.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:44.7.0:*:*:*:*:*:*:* Versions 44.7.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:44.8.0:*:*:*:*:*:*:* Versions 44.8.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:44.9.0:*:*:*:*:*:*:* Versions 44.9.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:44.10.0:*:*:*:*:*:*:* Versions 44.10.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:44.11.0:*:*:*:*:*:*:* Versions 44.11.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:44.12.0:*:*:*:*:*:*:* Versions 44.12.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:45.1.0:*:*:*:*:*:*:* Versions 45.1.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:45.2.0:*:*:*:*:*:*:* Versions 45.2.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:45.3.0:*:*:*:*:*:*:* Versions 45.3.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings:45.4.0:*:*:*:*:*:*:* Versions 45.4.0 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-20233
- 2026-10-03 Alias added: GHSA-474g-pxq3-xp9q
References
Advisory 1
More Cisco Webex Meetings vulnerabilities
- TI-2019-01300 Cisco Webex Meetings Desktop App and Cisco Webex Productivity Tools Update Service Command Injection Vulnerability CVSS 3.0HIGH 8.8
- TI-2018-00079 Improper input validation in Cisco WebEx Advanced Recording Format Player CVSS 3.0CRITICAL 9.6
- TI-2018-00224 Improper input validation in Cisco WebEx Advanced Recording Format file players CVSS 3.0CRITICAL 9.6
- TI-2020-02913 Cisco Webex Meetings and Cisco Webex Meetings Server Token Handling Unauthorized Access Vulnerability CVSS 3.1CRITICAL 9.8
- TI-2020-02894 Cisco Webex Meetings Desktop App for Mac Update Feature Code Execution Vulnerability CVSS 3.1HIGH 8.8
- TI-2017-09144 Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players CVSS 3.0CRITICAL 9.6
Sources
- CVE-2026-20233 · CVE Program
- CVE-2026-20233 · NVD
- FIRST EPSS
- GHSA-474g-pxq3-xp9q · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences