What is CVE-2026-66642?

CVE-2026-66642 is a medium-severity vulnerability in Wp Umbrella, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2026-08-10.

How severe is CVE-2026-66642?

Medium severity. CVSS v3 base score is 5.4 out of 10.

CSRF in Wp Umbrella

CVE-2026-66642

Cross-Site Request Forgery (CSRF) vulnerability in WP Umbrella allows Cross Site Request Forgery. This issue affects WP Umbrella: from 2.24.2 through 2.26.2.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2026-08-10 · last modified 2026-08-12.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.001 (0.9th percentile), scored 2026-09-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 0.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Wp Umbrella — versions 2.24.2

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

patchstack.com/database/wordpress/plugin/wp-health/vulnerability/wordpress-wp-u… (vdb-entry)
wp-umbrella.com/blog/security-disclosure-csrf-vulnerability-in-the-wp-umbrella-… (vendor-advisory)

Frequently asked questions

What is CVE-2026-66642?: CVE-2026-66642 is a medium-severity vulnerability in Wp Umbrella, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2026-08-10.
How severe is CVE-2026-66642?: Medium severity. CVSS v3 base score is 5.4 out of 10.