CVE-2026-8474
Possible to run a Cross Site Scripting request on the login API available on Stormshield SNS appliances.
CVE-2026-8474 is a medium vulnerability (CVSS 5.3) in Stormshield Network Security, published June 1, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. No source names a fixed version.
- Severity
- 5.3 MediumCVSS 3.1, CVE List
- Exploit chance
- 0.18%EPSS, 7th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
Affected products
What each source reports
CVE List Score used
Possible to run a Cross Site Scripting request on the login API available on Stormshield SNS appliances.
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.
- Record
CVE-2026-8474- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2026-33586
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.
- Record
EUVD-2026-33586- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-72g9-78vw-8w8h
A vulnerability was discovered on Stormshield Network Security * 4.3.0 to 4.3.41, * ...
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.
- Record
GHSA-72g9-78vw-8w8h- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-8474- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.