CVE-2026-8474: 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…

PriorityP428medium5.3CVSS 3.1

AVNACLPRNUINSUCNILAN

EPSS

0.18%

8.0th percentile

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.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
stormshield	stormshield_network_security	4.3.0 – 4.3.41	—
stormshield	stormshield_network_security	4.8.0 – 4.8.15	—
stormshield	stormshield_network_security	5.0.0 – 5.0.5	—

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