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9.8
CVE-2026-75800: Frontegg SAML SSO plugin can let attackers log in
CVE-2026-75800 · published 1 month ago
Summary
The Frontegg SAML Single Sign‑On plugin for WordPress does not check the digital signature or source of login messages. Because of this, a remote attacker could create a fake login response and gain access to any account, including admin accounts, or create new accounts. Update the plugin to a version that includes proper signature verification, or remove the plugin until a fix is applied.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| unknown | frontegg saml sso | <= 1.0.1 |
Original advisory text
The Frontegg SAML SSO WordPress plugin through 1.0.1 does not verify the signature or issuer of SAML authentication responses before establishing a session, allowing unauthenticated attackers to lo...
The Frontegg SAML SSO WordPress plugin through 1.0.1 does not verify the signature or issuer of SAML authentication responses before establishing a session, allowing unauthenticated attackers to log in as any user, including administrators, as well as to create arbitrary accounts.
Internet-facing
3 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically
- Gives an attacker full control
Severity
9.8
Critical
Type
CWE-287Improper Authentication
Timeline
Published12 Sep 2026
Updated11 Oct 2026
First seen12 Sep 2026
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