CVE-2026-82842
High
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.
SeverityHigh
CVSS8.1
Exploit probability—
ProductSAML Single Sign On
PublishedSep 20, 2026
First seenSep 20, 2026
Weakness typeCWE-269Improper privilege management
How to fix
Update
- SAML Single Sign On6.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| SAML Single Sign On | 4.8.43 ≤ v < 6.0.0 | 6.0.0 |
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