CVE-2024-0689: The Custom Field Suite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a meta import in all versions up to, and including, 2.6.4 due to insufficient input sanitization and output

medium Affects custom-field-suite (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

The Custom Field Suite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a meta import in all versions up to, and including, 2.6.4 due to insufficient input sanitization and output

Package
custom-field-suite (WordPress plugin) WordPress
Affected versions
<2.6.5
Fixed in
2.6.5
Severity
medium  CVSS 4.4
Exploitation
not on CISA KEV · EPSS 0% (27.2th percentile)
Published
2024-02-29
Source
nvd

References

CWE-79
NVD recordcustom-field-suite (WordPress plugin) advisories

Am I affected?

Find out in one command. phpwarden checks your WordPress install against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# one-time install
pip install phpwarden

# then
phpwarden wordpress /var/www/html

Or keep it checked automatically with the GitHub Action or a nightly cron; see WordPress docs.

Install docs   How findings are ranked

Related advisories