Possible to run a Cross Site Scripting request on the login API available on Stormshield SNS appliances.
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Stormshield | StormShield Network Security | 4.3.0 – 4.3.41; 4.8.0 – 4.8.15; 5.0.0 – 5.0.5 | — | No fix listed | CNA |
- StormShield Network Security VendorStormshield Affected 4.3.0 – 4.3.41; 4.8.0 – 4.8.15; 5.0.0 – 5.0.5 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-8474
- 2026-10-03 Alias added: GHSA-72g9-78vw-8w8h
References
More Stormshield vulnerabilities
- TI-2022-17498 zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in… CVSS 3.1CRITICAL 9.8
- TI-2023-00271 X.400 address type confusion in X.509 GeneralName CVSS 3.1HIGH 7.4
- TI-2022-13924 The llhttp parser <v14.20.1, <v16.17.1 and <v18.9.1 in the http module in Node.js does… CVSS 3.1MEDIUM 6.5
- TI-2023-06741 Buffer overflow in Cisco Secure Web Appliance CVSS 3.1CRITICAL 9.8
- TI-2022-13925 The llhttp parser <v14.20.1, <v16.17.1 and <v18.9.1 in the http module in Node.js does… CVSS 3.1MEDIUM 6.5
- TI-2022-04067 Double free after calling PEM_read_bio_ex CVSS 3.1HIGH 7.5
Sources
- CVE-2026-8474 · CVE Program
- CVE-2026-8474 · NVD
- FIRST EPSS
- GHSA-72g9-78vw-8w8h · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences