A Remote Code Execution (RCE) vulnerability has been identified in the WordPress RSVPMarker plugin. This vulnerability could allow a malicious actor to execute commands on the target website, potentially gaining backdoor access and taking full control of the website.
This vulnerability was discovered and responsibly reported by Ravi Dharmawan.
The vulnerability is an RCE vulnerability that occurs in the rsvpmarker-plugin.php file. The vulnerability allows an attacker to exploit a flaw in the way that the plugin handles user input to execute arbitrary commands on the target website.
The vulnerability has a CVSS 3.1 score of 10.0, which is considered to be critical. This means that the vulnerability is highly exploitable and could have a severe impact on the affected system.
To address this serious security risk, it is imperative to update the RSVPMarker Plugin to the latest available version, at least version 10.6.7. The vendor has released this version specifically to patch the RCE vulnerability.
An attacker who successfully exploits this vulnerability could:
- Execute arbitrary commands on the target website, which could allow them to:
- Install or uninstall plugins or themes.
- Modify or delete files.
- Create or delete user accounts.
- Take full control of the website.
To protect the WordPress website effectively, please follow these recommendations:
- Update the Plugin: Immediately update the RSVPMarker Plugin to the latest available version, at least version 10.6.7. This update contains the critical security fix required to address the RCE vulnerability.
- Regularly Update Plugins: Make it a standard practice to regularly update all WordPress plugins and themes to their latest versions. Regular updates are vital for maintaining the security of the website.
- Security Audits: Consider conducting regular security audits or using security plugins to scan for vulnerabilities in WordPress installation. This proactive approach helps identify and address potential security risks before they can be exploited.