Vulnerability · Published May 15, 2026 · Assigned by Wordfence

CVE-2026-6415Advanced Custom Fields: Font Awesome Field <= 5.0.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting via JSON Field

Medium 6.4

In plain English

A medium-severity cross-site scripting in Advanced Custom Fields: Font Awesome Field from justinkruit. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)6.4Medium

Exploit odds (30 days)0.3%top 80.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
justinkruit	Advanced Custom Fields: Font Awesome Field	0 – through 5.0.2

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

In plain English

Official description

Affected products (as reported)

References