CVE-2020-3463: Cisco Webex Meetings Reflected Cross-Site Scripting Vulnerability

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-08-17 · updated 2026-06-17
Weakness: CWE-79

Description

A vulnerability in the web-based management interface of Cisco Webex Meetings could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of the affected service. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected service. 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.

Affected products

Cisco WebEx WRF Player: before 40.2.18 — fixed in 40.2.18

How to fix

Upgrade to a fixed version: Cisco WebEx WRF Player 40.2.18. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2020-3463 or the next vulnerability affects your stack