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 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.

CVSS v3.1

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.20% chance of exploitation in the next 30 days, 10th percentile

Published

2026-08-19

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/7b79d86e-d3f8-4d4f-929b-fd00540cc00f/

References

• CVE Record
• NVD entry

Related

• CVE-2026-19839
• CVE-2026-19844
• CVE-2026-19838
• CVE-2026-19845
• CVE-2026-19837
• CVE-2026-19846