Vulnerability · Published Jun 24, 2026 · Assigned by WPScan

CVE-2026-9710Themeco Cornerstone < 7.8.8 (Premium, bundled with X Theme) - Subscriber+ Arbitrary User Password Hash Disclosure

High 7.7

In plain English

A high-severity security flaw in Cornerstone from Unknown. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)7.7High

Exploit odds (30 days)0.4%top 68.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 user to evaluate dynamic content tokens against arbitrary users and disclose their sensitive metadata including raw password hashes. This affects the premium co Cornerstone page builder distributed bundled with the X , not the unrelated free `cornerstone` Cornerstone WordPress plugin before 7.8.8 (v0.8.x) on the .org repository.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Cornerstone	3.0.0 – before 7.8.8

References

https://wpscan.com/vulnerability/4fc21e38-f2df-41be-86b7-a897483574bb/ exploit, vdb-entry, technical-description