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CVE-2023-29183

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-09-13 · updated 2026-06-17
• Weakness: CWE-79

Description

An improper neutralization of input during web page generation ('Cross-site Scripting') vulnerability [CWE-79] in FortiProxy 7.2.0 through 7.2.4, 7.0.0 through 7.0.10 and FortiOS 7.2.0 through 7.2.4, 7.0.0 through 7.0.11, 6.4.0 through 6.4.12, 6.2.0 through 6.2.14 GUI may allow an authenticated attacker to trigger malicious JavaScript code execution via crafted guest management setting.

Affected products

• Fortinet FortiOS (FortiGate): from 6.2.0 before 6.2.15; from 6.4.0 before 6.4.13; from 7.0.0 before 7.0.12; from 7.2.0 before 7.2.5 — fixed in 6.2.15, 6.4.13, 7.0.12, 7.2.5
• Fortinet FortiProxy: from 7.0.0 before 7.0.11; from 7.2.0 before 7.2.5 — fixed in 7.0.11, 7.2.5

How to fix

Upgrade to a fixed version: Fortinet FortiOS (FortiGate) 6.2.15, 6.4.13, 7.0.12, 7.2.5; Fortinet FortiProxy 7.0.11, 7.2.5. Check the vendor advisory for mitigations.

References

• https://fortiguard.com/psirt/FG-IR-23-106
• https://fortiguard.com/psirt/FG-IR-23-106

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