What’s Vulnerable › Vulnerabilities
CVE-2026-82842: SAML Single Sign On < 6.0.0 - Unauthenticated Privilege Escalation via Account Matching
- Severity: high (CVSS 8.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-20 · updated 2026-09-21
- Weakness: CWE-269
Description
The SAML Single Sign On WordPress plugin before 6.0.0 does not honour the configured criterion for linking an incoming single sign-on identity to a WordPress account, always resolving the identity by login name whatever the site has chosen, which allows an attacker who can have the site's identity provider assert a login name of their choosing to authenticate as any account, including an administrator, without proving ownership of that account.
Affected products
- SAML Single Sign On: from 4.8.43 before 6.0.0 — fixed in 6.0.0
How to fix
Upgrade to a fixed version: SAML Single Sign On 6.0.0. Check the vendor advisory for mitigations.
References
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