CVE-2026-26248
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.
Fixes and workarounds
Fix
Upgrade to FortiSandbox version 5.2.0 or above Upgrade to FortiSandbox version 5.0.6 or above Upgrade to FortiSandbox version 4.4.9 or above Upgrade to FortiSandbox PaaS version 5.2.0 or above Upgrade to FortiSandbox PaaS version 5.0.6 or above Upgrade to FortiSandbox Cloud version 5.0.6 or above
Source: CNA: fortinetAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| FortiSandbox Fortinet |
≥ 5.0.0; ≤ 5.0.5 (affected, semver) ≥ 4.4.0; ≤ 4.4.8 (affected, semver) ≥ 4.2.1; ≤ 4.2.8 (affected, semver) Other versions: unaffected |
CNA: fortinet |
| FortiSandbox Cloud Fortinet |
≥ 5.0.4; ≤ 5.0.5 (affected, semver)
Other versions: unaffected |
CNA: fortinet |
| FortiSandbox PaaS Fortinet |
≥ 5.0.4; ≤ 5.0.5 (affected, semver)
Other versions: unaffected |
CNA: fortinet |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.9 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C | CNA: fortinet |
| 3.1 / 8.8 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
For agents and automation
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