What is CVE-2026-20149?

CVE-2026-20149 is a medium-severity vulnerability in Cisco Webex Meetings, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-04.

How severe is CVE-2026-20149?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Cisco Webex Meetings

CVE-2026-20149

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 t…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (17.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Cisco Webex Meetings — versions N/A

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cisco-sa-webex-xss-TZFTbbwN

Frequently asked questions

What is CVE-2026-20149?: CVE-2026-20149 is a medium-severity vulnerability in Cisco Webex Meetings, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-04.
How severe is CVE-2026-20149?: Medium severity. CVSS v3 base score is 6.1 out of 10.