What is CVE-2026-66146?

CVE-2026-66146 is a medium-severity vulnerability in Sonicwall Gms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-11.

How severe is CVE-2026-66146?

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

XSS in Sonicwall Gms

CVE-2026-66146

Multiple Cross-Site Scripting (XSS) vulnerabilities were identified in GMS 9.5.1 (Build 9510.1044) and earlier versions that allow a remote attacker to execute javascript script in a user's browser.

Vulnerability class: XSS (Cross-Site Scripting)

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

Sonicwall Gms — versions 9.5.1 and earlier versions

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

PSIRT@sonicwall.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-66146?: CVE-2026-66146 is a medium-severity vulnerability in Sonicwall Gms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-11.
How severe is CVE-2026-66146?: Medium severity. CVSS v3 base score is 6.1 out of 10.