CVE-2026-8474 PUBLISHED

Possible to run a Cross Site Scripting request on the login API available on Stormshield SNS appliances.

Assigner: airbus
Reserved: 13.05.2026 Published: 01.06.2026 Updated: 01.06.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS Score: 5.3

Product Status

Vendor StormShield
Product StormShield Network Security
Versions Default: unaffected
  • affected from 4.3.0 to 4.3.41 (incl.)
  • affected from 4.8.0 to 4.8.15 (incl.)
  • affected from 5.0.0 to 5.0.5 (incl.)

Solutions

The following updates fix this vulnerability:

  • SNS 5.0.6
  • SNS 4.8.16
  • SNS 4.3.42

References

Problem Types

  • CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') CWE