CVE-2025-3563 Overview
CVE-2025-3563 is a code injection vulnerability in WuzhiCMS 4.1. The flaw resides in the Set function of /index.php?m=attachment&f=index&_su=wuzhicms&v=set&submit=1, part of the Setting Handler component. Attackers can manipulate the Setting argument to inject code into the application. The vulnerability is exploitable remotely but requires high privileges to abuse. The exploit details have been publicly disclosed. The vendor was contacted prior to disclosure but did not respond. The issue maps to CWE-94 (Improper Control of Generation of Code) and CWE-74 (Injection).
Critical Impact
Authenticated remote attackers can inject code through the WuzhiCMS attachment setting handler, compromising the confidentiality, integrity, and availability of the application.
Affected Products
- WuzhiCMS 4.1.0
- Component: Setting Handler (/index.php?m=attachment&f=index&_su=wuzhicms&v=set&submit=1)
- Vulnerable function: Set
Discovery Timeline
- 2025-04-14 - CVE-2025-3563 published to NVD
- 2025-04-29 - Last updated in NVD database
Technical Details for CVE-2025-3563
Vulnerability Analysis
The vulnerability exists in the Set function of the WuzhiCMS attachment module. The handler processes the Setting parameter submitted through the request URI /index.php?m=attachment&f=index&_su=wuzhicms&v=set&submit=1. The application fails to validate or sanitize the parameter before incorporating it into a code execution context. Attackers with valid authenticated sessions and elevated privileges can manipulate the Setting argument to inject executable code. The exploit has been publicly disclosed, increasing the likelihood of opportunistic abuse against unpatched deployments.
Root Cause
The root cause is improper neutralization of attacker-controlled input passed through the Setting parameter to the attachment configuration logic. The Set function processes input that flows into a code interpretation sink without applying input validation, type enforcement, or output encoding. This pattern maps to CWE-94, where untrusted input directly influences code generation or evaluation paths in the application.
Attack Vector
The attack vector is network-based and targets the WuzhiCMS administrative interface. An authenticated attacker holding privileges to access the attachment settings endpoint submits a crafted Setting value via the documented URI. Because authentication and elevated privileges are required, the practical attack surface is limited to insider threats, credential theft scenarios, or chained exploits that first obtain administrative access. Refer to the VulDB advisory and the Shikangsi technical analysis for parameter-level details.
Detection Methods for CVE-2025-3563
Indicators of Compromise
- HTTP POST requests to /index.php?m=attachment&f=index&_su=wuzhicms&v=set&submit=1 containing PHP syntax, backticks, or shell metacharacters in the Setting parameter.
- Unexpected modifications to WuzhiCMS attachment configuration files following administrative session activity.
- New or modified PHP files in WuzhiCMS web directories that do not match release artifacts.
- Outbound network connections originating from the PHP-FPM or web server process to unfamiliar hosts after set endpoint access.
Detection Strategies
- Inspect web server access logs for requests to the attachment module set action and correlate with the requesting user and session identifier.
- Apply web application firewall rules that flag suspicious payload patterns such as <?php, eval(, system(, or base64_decode( within the Setting parameter.
- Hash-verify WuzhiCMS PHP source files against the vendor-distributed 4.1 baseline to identify tampering.
Monitoring Recommendations
- Monitor for execution of php, sh, or other interpreters spawned as child processes of the web server when not expected by normal application flow.
- Audit authentication logs for newly created or elevated administrative accounts that could be used to reach the vulnerable endpoint.
- Track file integrity changes within the WuzhiCMS application root, particularly attachment-related configuration and cache files.
How to Mitigate CVE-2025-3563
Immediate Actions Required
- Restrict network access to the WuzhiCMS administrative interface using IP allowlisting or VPN-only access until a vendor patch is available.
- Rotate credentials for all administrative WuzhiCMS accounts and enforce strong, unique passwords with multi-factor authentication where feasible.
- Review administrative account inventory and remove unused or stale accounts that could be leveraged by an attacker meeting the high-privilege precondition.
- Deploy a web application firewall rule blocking PHP and shell metacharacters in the Setting parameter of the attachment set endpoint.
Patch Information
No vendor patch has been published for CVE-2025-3563 as of the NVD last-modified date of 2025-04-29. The vendor did not respond to coordinated disclosure attempts according to the VulDB entry. Organizations running WuzhiCMS 4.1.0 should track the vendor repository for forthcoming fixes and apply them immediately upon release.
Workarounds
- Disable or remove the attachment set functionality if it is not required for operational use.
- Place the WuzhiCMS administrative path behind reverse proxy authentication to add an additional control layer.
- Apply server-side input filtering at a reverse proxy to strip code-execution sequences from the Setting parameter before requests reach the application.
- Consider migrating to an actively maintained content management platform if the vendor remains unresponsive to security disclosures.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
