Main Vulnerability Database Vulnerabilities #VU165088

XML injection in FortiManager and FortiAnalyzer - CVE-2026-126177

Published: November 11, 2026

Vulnerability identifier: #VU165088

CSH Severity: High

CVSS v4: 8.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-126177

CWE-ID: CWE-91

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

The vulnerability exists due to xml injection. An unauthenticated remote attacker can inject arbitary content into a signed SAML response via crafted SAML requests.

Affected software

FortiManager
FortiAnalyzer

How to mitigate CVE-2026-126177

Install update from vendor's website.

FortiManager - addressed in versions 7.2.13, 7.4.12, 7.6.8, 8.0.1
FortiAnalyzer - addressed in versions 7.2.13, 7.4.12, 7.6.8, 8.0.1

External References

https://www.fortiguard.com/psirt/FG-IR-26-222

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