Is there a public exploit for CVE-2026-26248?

No public exploit for CVE-2026-26248 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-26248?

CVE-2026-26248 scores CVSS 7.9 (v3.1), rated high.

What does CVE-2026-26248 affect?

CVE-2026-26248 affects Fortinet FortiSandbox, FortiSandbox Cloud, FortiSandbox PaaS.

7.9 High

A improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSandbox 5.0.0 through…

CVE-2026-26248

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 Cloud 5.0.4 through 5.0.5, FortiSandbox PaaS 5.0.4 through 5.0.5 may allow an unauthenticated attacker to perform an XSS attack via social engineering and crafted HTTP requests.

Assessment

CVSS: 7.9 (v3.1)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 10 November 2026
Last updated: 11 November 2026
Affected: Fortinet · FortiSandbox · FortiSandbox Cloud · FortiSandbox PaaS
Assigner: fortinet

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

At the source

EUVD (ENISA)

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-142

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