Reflected XSS in Operation Center

unknownCVE-2025-61886

CVSSv3 Score: 4.9 An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] in FortiSandbox and FortiSandbox Cloud may allow an attacker to perform an XSS attack via crafted HTTP requests. Revised on 2026-04-14 00:00:00

CSIRTS triage

vendor: Fortinet product: FortiSandbox Cross-site scripting

What: There is a reflected XSS vulnerability that allows an attacker to perform an XSS attack via crafted HTTP requests.
Who is affected: Deployments of FortiSandbox and FortiSandbox Cloud.
Urgency: Remediation is necessary due to the potential for XSS attacks, which can lead to session hijacking or other malicious actions.
Action: Update to the latest version of FortiSandbox to mitigate this vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Fortinet FortiGuard PSIRT (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-04-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://fortiguard.fortinet.com/psirt/FG-IR-26-109

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2025-618860.27% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 19% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2025-61886	coverage & exploitation status	NVD · CVE.org

Recent advisories for Reflected XSS in

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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