CVE-2026-39812
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/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fortinet | Fortisandbox | >= 4.2.0, <= 4.2.8 |
| Fortinet | Fortisandbox | >= 4.4.0, < 4.4.9 |
| Fortinet | Fortisandbox | >= 5.0.0, < 5.0.6 |
| Fortinet | Fortisandbox Cloud | >= 22.2.4134, <= 23.1.4260 |
| Fortinet | Fortisandbox Cloud | >= 23.3.4329, <= 24.1.4436 |
| Fortinet | Fortisandbox Cloud | 5.0.4 |
| Fortinet | Fortisandbox Cloud | 5.0.5 |
References
- https://fortiguard.fortinet.com/psirt/FG-IR-26-110Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-39812?
How severe is CVE-2026-39812?
How do I fix CVE-2026-39812?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-39807Reliance on Untrusted Inputs in a Security Decision vulnerab…6.3
- CVE-2026-39808A improper neutralization of special elements used in an os …9.8
- CVE-2026-39809A improper neutralization of special elements used in an sql…6.7
- CVE-2026-3981A vulnerability was found in itsourcecode Online Doctor Appo…9.8
- CVE-2026-39810A use of hard-coded cryptographic key vulnerability in Forti…5.5
- CVE-2026-39811A integer overflow or wraparound vulnerability in Fortinet F…4.9
- CVE-2026-39813A path traversal: '../filedir' vulnerability in Fortinet For…9.8
- CVE-2026-39814A relative path traversal vulnerability in Fortinet FortiWeb…6.7
- CVE-2026-39815A improper neutralization of special elements used in an sql…8.8
- CVE-2026-39816The optional extension component TinkerpopClientService is m…8.8
- CVE-2026-39817The "go tool pack" subcommand (usually used only by the comp…5.9
- CVE-2026-39819The "go bug" command writes to two files with predictable na…5.3
Are you affected by CVE-2026-39812?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
