CVE-2026-20149 — Cross-site Scripting in Cisco Webex Meetings

CWE-79 — Cross-site Scripting4 documents4 sources
Severity
6.1MEDIUMNVD
EPSS
0.0%
top 85.61%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Cisco Webex Meetings
Timeline
PublishedMar 4

Description

A vulnerability in Cisco Webex could have allowed an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack. Cisco has addressed this vulnerability, and no customer action is needed. This vulnerability was due to improper filtering of user-supplied 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 conduct an XSS at…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitability: 2.8 | Impact: 2.7

Affected Packages1 packages

🔴Vulnerability Details

2
GHSA
GHSA-wgqr-v4gj-r4jj: A vulnerability in Cisco Webex could have allowed an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack↗2026-03-04
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CVEList
CVE-2026-20149: A vulnerability in Cisco Webex could have allowed an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack↗2026-03-04
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📋Vendor Advisories

1
Cisco
Cisco Webex Services Cross-Site Scripting Vulnerability↗2026-03-04
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CVE-2026-20149 — Cross-site Scripting in Cisco | cvebase