What is CVE-2026-9710?

CVE-2026-9710 is a high-severity vulnerability in Cornerstone, classified under CWE-200 INFORMATION EXPOSURE. CVSS score: 7.7/10. Published 2026-06-24.

How severe is CVE-2026-9710?

High severity. CVSS v3 base score is 7.7 out of 10.

Vulnerability in Cornerstone

CVE-2026-9710

The Cornerstone WordPress plugin before 7.8.8 does not enforce capability checks on one of its CSS-preview request handlers, and exposes the nonce needed to call it to every logged-in user on any wp-admin page, allowing any authenticated u…

EPSS: 0.001 (3.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

Affected products

Unknown Cornerstone — versions 3.0.0

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-9710?: CVE-2026-9710 is a high-severity vulnerability in Cornerstone, classified under CWE-200 INFORMATION EXPOSURE. CVSS score: 7.7/10. Published 2026-06-24.
How severe is CVE-2026-9710?: High severity. CVSS v3 base score is 7.7 out of 10.