Fortinet
CVE-2026-126240: A improper neutralization of special elements used in an ldap query ('ldap injection') vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAu
CVE-2026-126240 Nov 11, 2026 Source: Vendor
In brief. Fortinet published CVE-2026-126240: A improper neutralization of special elements used in an ldap query ('ldap injection') vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAu on November 11, 2026. It credits 1 researcher or team for 1 CVE.
A improper neutralization of special elements used in an ldap query ('ldap injection') vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an authenticated attacker to bypass authentication. Successful exploitation requires either a malicious/compromised upstream IdP, or an IdP configuration that allows the user to control the NameID (or the SAML attribute used as the username).
Source of record
The credited names below are quoted verbatim from the vendor's own advisory:
https://nvd.nist.gov/vuln/detail/CVE-2026-126240
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Credited
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Credited as Gwendal Guegniaud of the Fortinet Product Security team with the use of the frontier AI model: Claude Mythos