CVE-2026-8474
Medium
Description
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductStormShield Network Security
PublishedJun 1, 2026
First seenJun 1, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| StormShield StormShield Network Security | 4.3.0 ≤ v ≤ 4.3.41, 4.8.0 ≤ v ≤ 4.8.15, 5.0.0 ≤ v ≤ 5.0.5 | — |
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