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VulnerabilityPublished

CVE-2026-9709: Cornerstone (WordPress plugin) · Information Exposure

Affects Cornerstone (WordPress plugin)Source CVE Database V5

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Not known to be exploited · CVSS 7.7 High : upgrade to 7.8.9 soon.

Data as of 5 Nov 2026, 00:01 UTC

CVSS 3.1 base score
7.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 31% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 7.8.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade Cornerstone (WordPress plugin) to 7.8.9.

Affected software

ProductAffectedFixed in
CornerstoneAffected
  • >=3.0.0 <7.8.9
Fixed in
  • 7.8.9

AI-suggested

If you cannot patch yet, restrict access to authenticated users and monitor for suspicious activity. Avoid using affected versions in production environments if possible.

Description

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.

References

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