CVE-2023-29433

Vulnerability

Overview The tencentcloud-cos plugin for WordPress versions through 1.0.7 contains a missing authorization vulnerability. This issue arises from insufficient access control checks, allowing exploitation of incorrectly configured security levels. The vulnerability is classified as Broken Access Control (CWE-862).

Exploitation

Conditions Attackers can exploit this flaw without authentication, potentially performing actions reserved for higher-privileged users. The plugin fails to validate nonce tokens or authorization on certain functions, enabling unprivileged users to trigger privileged operations. This makes the vulnerability suitable for mass exploitation campaigns targeting thousands of WordPress sites.

Impact

Successful exploitation could allow attackers to escalate privileges, modify plugin settings, or access sensitive data associated with the Tencent Cloud COS integration. The CVSS score of 5.4 reflects a medium severity, but due to the lack of authentication requirements, the real-world risk is significant in automated attacks.

Mitigation

The vendor has not released a patched version; therefore, users should immediately disable or remove the plugin until an update is available. Regularly monitor the plugin's directory for patches and apply them as soon as released. This vulnerability is actively used in exploitation campaigns [1].