Quick answers
- Is CVE-2026-14466 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-14466 being exploited in the wild.
- How severe is CVE-2026-14466?
- Medium severity, with a CVSS score of 4.3, published 4 September 2026.
- Which products and versions are affected?
- Stormshield Network Security 4.8.0 to 4.8.16, 5.0.0 to 5.0.6.
- Is there a fix for CVE-2026-14466?
- A patch was published on 2026-09-04: Patches available: SNS 5.1.0, SNS 5.0.7, SNS 4.8.17 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-14466 attacked?
- It is attacked from the adjacent network, in a network appliance.
- Am I affected by CVE-2026-14466?
- Check whether you run Stormshield Network Security at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
This is a stored XSS vulnerability in the Stormshield SNS web administration panel. The vulnerability exists in the group comments functionality of the webservices administration interface, where an SNS administrator with appropriate permissions can inject malicious JavaScript code. The injected script persists in the system and executes when other administrators view the affected group comments. Exploitation requires administrative privileges and user interaction (another administrator must view the malicious comment), and the attack is limited to the adjacent network (AV:A). No workarounds are available; patches are available in SNS 5.1.0, 5.0.7, and 4.8.17.
Affected products
- Stormshield Network Security 4.8.0 to 4.8.16, 5.0.0 to 5.0.6
Timeline
- 2025-12-17: disclosed: Vulnerability discovered
- 2026-03-04: advisory: Initial advisory release (v1)
- 2026-09-04: advisory: Advisory updated and disclosed (v2)
- 2026-09-04: patched: Patches available: SNS 5.1.0, SNS 5.0.7, SNS 4.8.17