What is CVE-2024-4400?

CVE-2024-4400 is a medium-severity vulnerability in Boldgrid Post And Page Builder, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2024-05-16.

How severe is CVE-2024-4400?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Boldgrid Post And Page Builder

CVE-2024-4400

The Post and Page Builder by BoldGrid – Visual Drag and Drop Editor plguin for WordPress is vulnerable to Stored Cross-Site Scripting via an unknown parameter in versions up to, and including, 1.26.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-05-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (16.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.wordfence.com/threat-intel/vulnerabilities/id/9bb6683a-b8e6-4776-880f-5b489… (Third Party Advisory)
plugins.trac.wordpress.org/changeset/3087230/ (Patch)

Frequently asked questions

What is CVE-2024-4400?: CVE-2024-4400 is a medium-severity vulnerability in Boldgrid Post And Page Builder, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2024-05-16.
How severe is CVE-2024-4400?: Medium severity. CVSS v3 base score is 6.4 out of 10.