What is CVE-2026-9709?

CVE-2026-9709 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-2026-9709?

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

Vulnerability in Cornerstone

CVE-2026-9709

The Cornerstone WordPress plugin before 7.8.9 does not enforce capability checks on one of its REST API routes, allowing any authenticated user to disclose the metadata of any other user, including roles, session token previews and stored billing/shipping fields. This affects the premium co Cornerstone page builder distributed bundled with the X , not the unrelated free `cornerstone` Cornerstone WordPress plugin before 7.8.9 (v0.8.x) on the .org repository.

Published 2026-06-24 · last modified 2026-06-25.

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.

EPSS exploit prediction

EPSS: 0.004 (28.9th percentile), scored 2026-10-08.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Cornerstone — versions 3.0.0

References

wpscan.com/vulnerability/3ade0e4e-2070-4d3b-8f31-0d446839efd0/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-9709?: CVE-2026-9709 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-2026-9709?: High severity. CVSS v3 base score is 7.7 out of 10.