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

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-8474
StatePUBLISHED
Assignerairbus
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-01 09:16:21 UTC
Updated2026-06-01 15:17:42 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

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

Problem Types: CWE-79 | CWE-79 CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1CNACVSS5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA StormShield StormShield Network Security affected 4.3.0 4.3.41 semver Not specified
CNA StormShield StormShield Network Security affected 4.8.0 4.8.15 semver Not specified
CNA StormShield StormShield Network Security affected 5.0.0 5.0.5 semver Not specified

References

ReferenceSourceLinkTags
advisories.stormshield.eu/2026-003 [email protected] advisories.stormshield.eu
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: The following updates fix this vulnerability: * SNS 5.0.6 * SNS 4.8.16 * SNS 4.3.42

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