CVE-2026-19842
High · 8.8CVSS
8.8
EPSS
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Published
Aug 19, 2026
CISA due date
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The record
The SAML Single Sign On WordPress plugin before 5.4.7 does not verify the signature of a SAML response before storing the certificate it carries, and offers an administrator a one-click control that promotes that stored certificate to the site's trusted signing certificate, allowing unauthenticated attackers to have a certificate of their own trusted and then authenticate as any user, including an administrator.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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