A improper neutralization of special elements used in an ldap query ('ldap injection') vulnerability in Fortinet
Source GCVE Database
Public exploit available · CVSS 8.2 High · patch available : patch FortiAuthenticator as a priority.
Data as of 12 Nov 2026, 02:02 UTC
Thin evidence
One scorer or none| CNA (fortinet) | CVSS 3.1 | 8.2 |
|---|
- Patch
- Available
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N/E:P/RL:O/RC:CExploitation evidence
Disclosed: evidence found.
CVE published 11 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| FortinetFortiAuthenticator | Affected
| Fixed in– |
AI-suggested
If you cannot patch yet, review and harden IdP configurations to prevent user control over NameID or SAML attributes used for authentication.
Description
CVE-2026-126240 is an LDAP injection vulnerability in Fortinet FortiAuthenticator versions 6.6.0 through 6.6.10 and 8.0.0 through 8.0.3. It allows an authenticated attacker to bypass authentication if the attacker can control the NameID or SAML attribute used as the username, typically via a malicious or compromised upstream Identity Provider (IdP) or an IdP configuration that permits such control.