CVE-2018-13380

Name: CVE-2018-13380
Creator: NVD / NIST
Published: 2019-06-04T21:29:00.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 62.47%

Last modified Jun 17, 2026

CVE-2018-13380 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 62.47% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

62.47%

99.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Fortinet	Fortios	<= 5.2
Fortinet	Fortios	>= 5.4.0, <= 5.4.12
Fortinet	Fortios	>= 5.6.0, <= 5.6.7
Fortinet	Fortios	>= 6.0.0, <= 6.0.4
Fortinet	Fortiproxy	<= 1.2.8
Fortinet	Fortiproxy	2.0.0

References

https://fortiguard.com/advisory/FG-IR-18-383Mitigation, Vendor Advisory
https://fortiguard.com/advisory/FG-IR-20-230Vendor Advisory
https://fortiguard.com/advisory/FG-IR-18-383Mitigation, Vendor Advisory
https://fortiguard.com/advisory/FG-IR-20-230Vendor Advisory

Timeline

Published: Jun 4, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-13380?

How severe is CVE-2018-13380?

CVE-2018-13380 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 62.47% probability of exploitation in the next 30 days.

How do I fix CVE-2018-13380?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-13380?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST