Strix
26.1K

CVE-2026-39812

MEDIUMCVSS 4.8/10EPSS 0.19%

Last modified

CVE-2026-39812 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. A improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8, FortiSandbox 4.2 all versions, FortiSandbox PaaS 5.0.0 through 5.0.5, FortiSandbox PaaS 4.4.0 through 4.4.8, FortiSandbox PaaS 4.2 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

A improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8, FortiSandbox 4.2 all versions, FortiSandbox PaaS 5.0.0 through 5.0.5, FortiSandbox PaaS 4.4.0 through 4.4.8, FortiSandbox PaaS 4.2 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>

Metrics

CVSS 3.1
4.8/10

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

EPSS Probability
0.19%

9.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
FortinetFortisandbox>= 4.2.0, <= 4.2.8
FortinetFortisandbox>= 4.4.0, < 4.4.9
FortinetFortisandbox>= 5.0.0, < 5.0.6
FortinetFortisandbox Cloud>= 22.2.4134, <= 23.1.4260
FortinetFortisandbox Cloud>= 23.3.4329, <= 24.1.4436
FortinetFortisandbox Cloud5.0.4
FortinetFortisandbox Cloud5.0.5

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-39812?
A improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8, FortiSandbox 4.2 all versions, FortiSandbox PaaS 5.0.0 through 5.0.5, FortiSandbox PaaS 4.4.0 through 4.4.8, FortiSandbox PaaS 4.2 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>
How severe is CVE-2026-39812?
CVE-2026-39812 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.
How do I fix CVE-2026-39812?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-39812?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST