CVE-2026-26248

EUVD-2026-122825
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 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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
fortinetCNA
8.8 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
fortinetfortisandbox
5.0.0 ≤
𝑥
≤ 5.0.5
CNA
fortinetfortisandbox
4.4.0 ≤
𝑥
≤ 4.4.8
CNA
fortinetfortisandbox
4.2.1 ≤
𝑥
≤ 4.2.8
CNA
fortinetfortisandbox
5.0.4 ≤
𝑥
≤ 5.0.5
CNA
fortinetfortisandbox_paas
5.0.4 ≤
𝑥
≤ 5.0.5
CNA