Overview
This report uncovers a severe vulnerability, CVE-2025-2111, found in the Insert Headers And Footers plugin for WordPress. The vulnerability affects all plugin versions up to, and including, 3.1.1. This vulnerability is significant due to its potential to compromise the system and leak data, thereby posing a substantial threat to WordPress site administrators and users.
Vulnerability Summary
CVE ID: CVE-2025-2111
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: System compromise or data leakage
Affected Products
Share secrets securely
Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.
Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.
- • Encrypted identity
- • Private Spaces for organizations and teams
- • End-to-end encrypted chat, calls, files, and notes
- • Sensitive AI work and protected collaboration
- • Built for information that cannot leak
Our mission is to secure human work alongside AI.
Product | Affected Versions
Insert Headers And Footers WordPress Plugin | Up to and including 3.1.1
How the Exploit Works
The vulnerability stems from missing or incorrect nonce validation in the ‘custom_plugin_set_option’ function, making it susceptible to Cross-Site Request Forgery (CSRF) attacks. Unauthenticated attackers can potentially exploit this by sending a forged request to update arbitrary options on the WordPress site. If an attacker can trick a site administrator into performing an action, such as clicking on a link, they can change the default role for registration to administrator and enable user registration. Consequently, attackers can gain administrative user access to a vulnerable site. To exploit this vulnerability, the ‘WPBRIGADE_SDK__DEV_MODE’ constant must be set to ‘true’.
Conceptual Example Code
Here is a conceptual example of how the vulnerability might be exploited using an HTTP request:
POST /wp-admin/admin-ajax.php?action=ihaf_insertion&ihaf_nonce= CSRF_TOKEN HTTP/1.1
Host: targetwordpresssite.com
Content-Type: application/x-www-form-urlencoded
data={ "ihaf_insert_header": "<script>malicious_code_here</script>", "ihaf_insert_header_priority": "1" }In this example, the attacker is sending a forged POST request to the ‘ihaf_insertion’ endpoint, which changes the header of the website to include malicious code.
Mitigation Guidance
Users are advised to apply the vendor-supplied patch immediately to remediate this vulnerability. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation strategy. In the long term, implementing robust CSRF protections and nonce validation can help prevent similar vulnerabilities.