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TI-2023-06840 Aliases CVE-2023-20133GHSA-rcq7-jcwj-8f59

Cross-site scripting in Cisco Webex Meetings

Priority LOW 25CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
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 interface of Cisco Webex Meetings could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface. This vulnerability exists because of insufficient validation of user-supplied input in Webex Events (classic) programs, email templates, and survey questions. An attacker could exploit this vulnerability by persuading a user to click a malicious link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00644 51st 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

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Webex Meetings39.10; 39.11; 39.6; 39.7; 39.7.4; 39.7.7; 39.8; 39.8.2; 39.8.3; 39.8.4; 39.9; 39.9.1; 40.1; 40.2; 40.4; 40.4.10; 40.6; 40.6.2; 42.10; 42.11; 42.6; 42.9; 42.12; 42.8; 42.7; 43.2; 43.1; 43.3; 43.4; 43.4.2; 43.5.0; 43.4.1—No fix listedCNA
  • Cisco Webex Meetings VendorCisco Affected 39.10; 39.11; 39.6; 39.7; 39.7.4; 39.7.7; 39.8; 39.8.2; 39.8.3; 39.8.4; 39.9; 39.9.1; 40.1; 40.2; 40.4; 40.4.10; 40.6; 40.6.2; 42.10; 42.11; 42.6; 42.9; 42.12; 42.8; 42.7; 43.2; 43.1; 43.3; 43.4; 43.4.2; 43.5.0; 43.4.1 Fixed in — No fix listed CNA

CPE configurations NVD · 32

CPEVersionsRoleVendor
cpe:2.3:a:cisco:webex_meetings:39.6:*:*:*:*:*:*:*39.6VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:39.7:*:*:*:*:*:*:*39.7VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:39.7.4:*:*:*:*:*:*:*39.7.4VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:39.7.7:*:*:*:*:*:*:*39.7.7VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:39.8:*:*:*:*:*:*:*39.8VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:39.8.2:*:*:*:*:*:*:*39.8.2VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:39.8.3:*:*:*:*:*:*:*39.8.3VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:39.8.4:*:*:*:*:*:*:*39.8.4VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:39.9:*:*:*:*:*:*:*39.9VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:39.9.1:*:*:*:*:*:*:*39.9.1VulnerableCisco
  • cpe:2.3:a:cisco:webex_meetings:39.6:*:*:*:*:*:*:* Versions 39.6 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:39.7:*:*:*:*:*:*:* Versions 39.7 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:*:*:*:*:*:*:* Versions 39.8 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:*:*:*:*:*:*:* Versions 39.9 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:39.9.1:*:*:*:*:*:*:* Versions 39.9.1 Vulnerable ·Cisco
Show 22 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:cisco:webex_meetings:39.10:*:*:*:*:*:*:*39.10VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:39.11:*:*:*:*:*:*:*39.11VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:40.1:*:*:*:*:*:*:*40.1VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:40.2:*:*:*:*:*:*:*40.2VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:40.4:*:*:*:*:*:*:*40.4VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:40.4.10:*:*:*:*:*:*:*40.4.10VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:40.6:*:*:*:*:*:*:*40.6VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:40.6.2:*:*:*:*:*:*:*40.6.2VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:42.6:*:*:*:*:*:*:*42.6VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:42.7:*:*:*:*:*:*:*42.7VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:42.8:*:*:*:*:*:*:*42.8VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:42.9:*:*:*:*:*:*:*42.9VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:42.10:*:*:*:*:*:*:*42.10VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:42.11:*:*:*:*:*:*:*42.11VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:42.12:*:*:*:*:*:*:*42.12VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:43.1:*:*:*:*:*:*:*43.1VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:43.2:*:*:*:*:*:*:*43.2VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:43.3:*:*:*:*:*:*:*43.3VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:43.4:*:*:*:*:*:*:*43.4VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:43.4.1:*:*:*:*:*:*:*43.4.1VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:43.4.2:*:*:*:*:*:*:*43.4.2VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:43.5.0:*:*:*:*:*:*:*43.5.0VulnerableCisco
  • cpe:2.3:a:cisco:webex_meetings:39.10:*:*:*:*:*:*:* Versions 39.10 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:39.11:*:*:*:*:*:*:* Versions 39.11 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:40.1:*:*:*:*:*:*:* Versions 40.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:40.2:*:*:*:*:*:*:* Versions 40.2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:40.4:*:*:*:*:*:*:* Versions 40.4 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:*:*:*:*:*:*:* Versions 40.6 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:*:*:*:*:*:*:* Versions 42.6 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:42.7:*:*:*:*:*:*:* Versions 42.7 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:42.8:*:*:*:*:*:*:* Versions 42.8 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:42.9:*:*:*:*:*:*:* Versions 42.9 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:42.10:*:*:*:*:*:*:* Versions 42.10 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:42.11:*:*:*:*:*:*:* Versions 42.11 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:42.12:*:*:*:*:*:*:* Versions 42.12 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:43.1:*:*:*:*:*:*:* Versions 43.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:43.2:*:*:*:*:*:*:* Versions 43.2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:43.3:*:*:*:*:*:*:* Versions 43.3 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:43.4:*:*:*:*:*:*:* Versions 43.4 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

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-20133
  2. 2026-10-03 Alias added: GHSA-rcq7-jcwj-8f59
  3. 2026-10-21 EPSS moved to the 50th–90th percentile

References

Advisory 1

  • 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
See all 68 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences