WordPress Cornerstone plugin < 7.8.8 - Arbitrary Code Execution vulnerability

published 2026-06-16 4 mo ago modified 2026-10-24 15 d ago also EUVD-2026-37497

cvss: 8.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits: 0; none known

Subscriber Arbitrary Code Execution in Cornerstone < 7.8.8 versions.

Patch / fix

fixed in 1

THEMECO Cornerstone 7.8.8

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 4 mo ago (2026-06-17)

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.5	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

THEMECO Cornerstone

Classification

Weakness

CWE-94 Improper Control of Generation of Code

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/wordpress/plugin/cornerstone/vulnerability/wordpress-cornerstone-plugin-7-8-8-arbitrary-code-executi
vdb-entry

Sources

CVE List CVE-2026-49113
NVD CVE-2026-49113

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary