CVE-2026-8474 MEDIUM

CVE-2026-8474: Possible to run a Cross Site Scripting request on the login API available on Stormshield SNS appliances.

Vendor Stormshield
Product StormShield Network Security
Weakness CWE-79 · XSS
Published June 1, 2026
Last update June 1, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

A vulnerability was discovered on Stormshield Network Security  * 4.3.0 to 4.3.41,  * 4.8.0 to 4.8.15,  * 5.0.0 to 5.0.5 It is possible to execute a reflected XSS attack on the login API available on Stormshield SNS appliance by executing a script on the victim's machine. The risks include the theft of cookies or other sensitive data, as well as the modification of page behavior, for example, by redirecting the victim to malicious websites.

Key dates

02Disclosure timeline

June 1, 2026 CVE published
June 1, 2026 Record updated