CVE-2024-52429

The vulnerability present in the WP Quick Setup plugin allows for the unrestricted upload of files with dangerous types, specifically enabling the upload of web shells to a web server. This flaw stems from inadequate validation of file types during the upload process, which permits malicious users to bypass security measures and execute arbitrary code on the server. The affected versions of the plugin, up to and including 2.0, fail to implement proper checks on the file extensions and content types, allowing attackers to upload potentially harmful scripts disguised as legitimate files. This oversight creates a significant security gap, as it directly undermines the integrity of the web application and the server it operates on.

Attack vectors associated with this vulnerability can be varied and complex. An attacker could exploit this weakness by crafting a malicious file, such as a PHP script, and uploading it through the plugin's file upload feature. Once the web shell is successfully uploaded, the attacker gains remote access to the server, allowing them to execute commands, manipulate files, and potentially pivot to other systems within the network. This exploitation could occur in various scenarios, including targeted attacks against vulnerable WordPress installations or as part of broader automated attacks where bots scan for known vulnerabilities in plugins. The ease of exploitation, combined with the potential for significant control over the affected server, makes this vulnerability particularly dangerous.

The real-world impact of this vulnerability can be profound, especially for businesses relying on WordPress for their online presence. Successful exploitation can lead to data breaches, unauthorized access to sensitive information, and the potential for defacement of the website. Furthermore, the presence of a web shell can facilitate lateral movement within the network, allowing attackers to compromise additional systems or exfiltrate data. The business risks associated with such incidents include reputational damage, loss of customer trust, regulatory penalties, and significant recovery costs. Organizations may also face downtime as they work to remediate the breach, further impacting their operations and bottom line.

To detect and mitigate the risks associated with this vulnerability, organizations should implement a multi-layered security approach. Regularly updating plugins and themes is crucial, as it ensures that known vulnerabilities are patched. Additionally, employing web application firewalls (WAF) can help filter out malicious requests and prevent unauthorized file uploads. Monitoring server logs for unusual activity, such as unexpected file uploads or execution of scripts, can also aid in early detection of exploitation attempts. Furthermore, conducting regular security assessments and penetration testing can help identify vulnerabilities before they can be exploited by malicious actors.

In conclusion, the unrestricted upload of files with dangerous types in the WP Quick Setup plugin represents a critical security vulnerability that poses significant risks to affected systems. The potential for web shell deployment allows attackers to gain unauthorized control over web servers, leading to severe consequences for businesses. By understanding the technical details, attack vectors, and real-world implications of this vulnerability, organizations can take proactive measures to detect and mitigate the associated risks, ultimately safeguarding their digital assets and maintaining the trust of their customers.

CSURFACE threat intelligence has identified a significant development in the exploitation landscape of CVE-2024-52429, marked by the emergence of publicly available proof-of-concept exploit code on GitHub. This new availability of exploit tools has directly influenced the vulnerability’s risk profile, as reflected by the assignment of a critical CVSS score of 9.9 and the appearance of a substantial EPSS score above 0.4. Our telemetry indicates a marked escalation in the potential for adversaries to weaponize this vulnerability, increasing the likelihood of successful web shell deployments on affected WP Quick Setup installations. The presence of a stable yet elevated EPSS score underscores a persistent and credible threat, signaling that exploitation attempts may become more frequent and widespread. Consequently, the threat level for organizations using this plugin has risen sharply, necessitating heightened vigilance in detection and response efforts to counteract the growing exploitation risk.

Update 2 — June 09, 2026

The recent downward adjustment of the CVSS score for CVE-2024-52429 from 9.9 to 8.8 reflects a refined understanding of the vulnerability’s exploitability and impact, informed by ongoing analysis and community feedback. This recalibration, while lowering the severity rating, does not diminish the critical nature of the vulnerability but rather contextualizes its risk more precisely. CSURFACE threat intelligence notes that the EPSS score remains elevated and stable, indicating sustained adversary interest and a persistent exploitation potential. Additionally, the emergence of a new proof-of-concept exploit targeting authorization bypass in WP Quick Setup underscores the evolving tactics threat actors employ to leverage this vulnerability. For defenders, this nuanced update signals the necessity to maintain rigorous monitoring and response capabilities, as the threat remains highly credible and active. The adjusted risk assessment suggests a slightly moderated but still high threat level, emphasizing that exploitation attempts will likely continue, particularly in environments where patching and access controls are insufficiently enforced.