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Vulnerability · Published Jul 15, 2026 · Assigned by fortinet

CVE-2026-59838

Medium 5.3

In plain English

A medium-severity security flaw in FortiSIEM from Fortinet. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.2%top 84.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A improper neutralization of script-related html tags in a web page (basic xss) vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4, FortiSIEM 7.2.0 through 7.2.6, FortiSIEM 7.1 all versions, FortiSIEM 7.0 all versions, FortiSIEM 6.7 all versions, FortiSIEM 6.6 all versions, FortiSIEM 6.5 all versions, FortiSIEM 6.4 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>

Affected products (as reported)

VendorProductVersions
Fortinet FortiSIEM 7.4.07.3.0 – through 7.3.47.2.0 – through 7.2.67.1.0 – through 7.1.97.0.0 – through 7.0.46.7.0 – through 6.7.106.6.0 – through 6.6.56.5.0 – through 6.5.3

Weakness: CWE-80 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C

References