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CVE-2026-19842 The SAML Single Sign On WordPress plugin before 5.4.7 does not verify the signature of a SAML response before storing…

Description

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 products and versions

Product Affected versions Fixed in
SAML Single Sign On 4.8 4.8.85 → < 5.4.7 5.4.7

Other CVEs of SAML Single Sign On

The 2 CVEs of SAML Single Sign On →
CVE-2026-82842 The SAML Single Sign On WordPress plugin before 6.0.0 does not honour the configured criterion for linking an… 8.1 High
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