CVE-2025-0807 in CITS Support svg, webp Media and TTF, OTF File Upload, Use Custom Fonts Plugin
Summary
by MITRE • 03/22/2025
The CITS Support svg, webp Media and TTF,OTF File Upload, Use Custom Fonts plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.2. This is due to missing or incorrect nonce validation on the cits_settings_tab() function. This makes it possible for unauthenticated attackers to update the plugin's settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
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Analysis
by VulDB Data Team • 03/22/2025
The vulnerability identified as CVE-2025-0807 affects the CITS Support svg, webp Media and TTF,OTF File Upload, Use Custom Fonts plugin for WordPress, representing a critical cross-site request forgery weakness that compromises the integrity of administrative functions. This vulnerability exists in all plugin versions up to and including 4.2, making it a widespread concern for WordPress installations that utilize this particular plugin for handling media uploads and custom font implementations. The flaw specifically resides within the cits_settings_tab() function where nonce validation is either absent or improperly implemented, creating a pathway for malicious actors to exploit the system's trust mechanisms.
The technical implementation of this CSRF vulnerability stems from the plugin's failure to properly validate cryptographic nonces that are essential for verifying the authenticity of administrative requests. In WordPress security architecture, nonces serve as time-based tokens that prevent unauthorized modifications to plugin settings by ensuring that requests originate from legitimate administrative sessions. When this validation mechanism fails, attackers can craft malicious requests that appear to come from authenticated administrators, bypassing the normal security checks that should protect sensitive configuration changes. This represents a direct violation of the principle of least privilege and demonstrates a fundamental flaw in the plugin's request handling process.
The operational impact of this vulnerability extends beyond simple configuration changes, as it provides attackers with the ability to manipulate critical plugin settings that may affect how media files are processed and how custom fonts are rendered across the website. An attacker who successfully exploits this vulnerability could potentially alter file upload restrictions, modify font rendering behaviors, or change other configuration parameters that could affect website functionality and security posture. The fact that this vulnerability is exploitable by unauthenticated attackers means that no prior access or credentials are required to attempt the attack, significantly increasing the attack surface and potential damage. This makes the vulnerability particularly dangerous in environments where administrators may be tricked into visiting malicious websites or clicking on compromised links.
The exploitation of this CSRF vulnerability aligns with attack patterns described in the MITRE ATT&CK framework under the technique of privilege escalation through manipulation of administrative functions. The vulnerability creates opportunities for attackers to establish persistent access or to degrade service availability through configuration changes that could affect how the website processes media content. Organizations should consider this vulnerability in the context of broader security controls, as it represents a failure in the principle of defense in depth where multiple layers of security should protect against such attacks. The CWE (Common Weakness Enumeration) classification for this issue would fall under CWE-352, which specifically addresses Cross-Site Request Forgery weaknesses in software applications.
Mitigation strategies for this vulnerability should prioritize immediate plugin updates to versions that properly implement nonce validation, as well as implementing additional security measures such as restricting administrative access to trusted networks and monitoring for unauthorized configuration changes. Organizations should also consider implementing web application firewalls that can detect and block suspicious requests targeting the affected plugin functions. The remediation process should include thorough testing of updated plugin versions to ensure that legitimate administrative functions remain operational while the CSRF vulnerability is properly addressed. Regular security audits of WordPress plugins should be conducted to identify similar weaknesses in other installed components, as this vulnerability demonstrates the importance of proper input validation and authentication mechanisms in plugin development.