Low SEVERITY — Vulnerability

Header injection in captive portal authentication form

CVSSv3 Score: 3.1 An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability [CWE-113] in FortiOS and FortiProxy captive portal may allow an attacker able to intercept and modify a user's authentication request to inject arbitrary headers via crafted HTTP requests. Revised on 2026-07-14 00:00:00

Platform
FortiGate / FortiOS
CVSS Score
3.1/10
Advisory
FG-IR-26-153
Published
14 July 2026
Views
3
Primary source: Review the official advisory at fortiguard.fortinet.com Kaynağa Git

Summary

CVSSv3 Score: 3.1 An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability [CWE-113] in FortiOS and FortiProxy captive portal may allow an attacker able to intercept and modify a user's authentication request to inject arbitrary headers via crafted HTTP requests. Revised on 2026-07-14 00:00:00

Source

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