CVE-2018-13380

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 62.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-06-04 · updated 2026-06-17
Weakness: CWE-79

Description

A Cross-site Scripting (XSS) vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.7, 5.4.0 to 5.4.12, 5.2 and below and Fortinet FortiProxy 2.0.0, 1.2.8 and below under SSL VPN web portal allows attacker to execute unauthorized malicious script code via the error or message handling parameters.

Affected products

Fortinet FortiOS (FortiGate): through 5.2; from 5.4.0 through 5.4.12; from 5.6.0 through 5.6.7; from 6.0.0 through 6.0.4
Fortinet FortiProxy: through 1.2.8; 2.0.0

References

https://fortiguard.com/advisory/FG-IR-18-383
https://fortiguard.com/advisory/FG-IR-20-230
https://fortiguard.com/advisory/FG-IR-18-383
https://fortiguard.com/advisory/FG-IR-20-230

Get alerted when CVE-2018-13380 or the next vulnerability affects your stack