CVE-2026-6415

medium

Description

The Advanced Custom Fields: Font Awesome plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 5.0.2. This is due to insufficient input validation of JSON field values and unsafe client-side HTML construction in the update_preview() JavaScript function. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/a7a53ba2-e983-4821-b3de-105a96b7cb0e?source=cve

https://plugins.trac.wordpress.org/changeset/3525840/

https://plugins.trac.wordpress.org/browser/advanced-custom-fields-font-awesome/trunk/assets/js/input-v6.js#L12

https://plugins.trac.wordpress.org/browser/advanced-custom-fields-font-awesome/trunk/assets/js/input-v6.js#L11

https://plugins.trac.wordpress.org/browser/advanced-custom-fields-font-awesome/tags/5.0.2/assets/js/input-v6.js#L12

https://plugins.trac.wordpress.org/browser/advanced-custom-fields-font-awesome/tags/5.0.2/assets/js/input-v6.js#L11

Details

Source: Mitre, NVD

Published: 2026-05-15

Updated: 2026-05-15

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.4

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00036