Medium severity · published Apr 14, 2026
CVE-2025-61886
An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.4,…
5.4
CVSS
0.3%
EPSS
No
On KEV
Description
An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.4, FortiSandbox PaaS 5.0.0 through 5.0.4 may allow an attacker to perform an XSS attack via crafted HTTP requests.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
FortiSandbox · Fortinet
5.0.0 through 5.0.4 · source: vendor, NVD
FP
FortiSandbox PaaS · Fortinet
5.0.0 through 5.0.4 · source: vendor
FC
Fortisandbox Cloud · Fortinet
5.0.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-61886
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-61886
Vendor Advisory
https://fortiguard.fortinet.com/psirt/FG-IR-26-109
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