{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/prosolution-wp-client/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":9.8,"id":"CVE-2026-2942"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["ProSolution WP Client"],"_cs_severities":["critical"],"_cs_tags":["wordpress","plugin","file-upload","rce"],"_cs_type":"advisory","_cs_vendors":["ProSolution"],"content_html":"\u003cp\u003eThe ProSolution WP Client plugin for WordPress, in versions up to and including 1.9.9, contains an arbitrary file upload vulnerability (CVE-2026-2942). The vulnerability stems from missing file type validation within the 'proSol_fileUploadProcess' function. This flaw allows unauthenticated attackers to upload arbitrary files to the affected server. Successful exploitation could lead to remote code execution (RCE), potentially giving the attacker complete control over the compromised WordPress instance. The vulnerability was reported by Wordfence and affects any WordPress site using the vulnerable plugin.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn unauthenticated attacker identifies a WordPress site using a vulnerable version of the ProSolution WP Client plugin (\u0026lt;= 1.9.9).\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP request targeting the 'proSol_fileUploadProcess' function.\u003c/li\u003e\n\u003cli\u003eThe request includes a payload designed to upload an arbitrary file (e.g., a PHP script) to the server.\u003c/li\u003e\n\u003cli\u003eDue to the missing file type validation, the server accepts the uploaded file without proper sanitization or checks.\u003c/li\u003e\n\u003cli\u003eThe attacker determines the upload path of the malicious file.\u003c/li\u003e\n\u003cli\u003eThe attacker then crafts another HTTP request to execute the uploaded PHP script.\u003c/li\u003e\n\u003cli\u003eThe PHP script executes arbitrary code on the server, potentially granting the attacker a web shell or other means of persistent access.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the compromised server for malicious activities, such as data theft, defacement, or further lateral movement.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability (CVE-2026-2942) allows unauthenticated attackers to upload arbitrary files to a vulnerable WordPress server. This can lead to remote code execution, potentially giving the attacker complete control over the compromised WordPress site. This could result in data breaches, website defacement, malware distribution, or the use of the compromised server for further attacks. Given the severity of RCE and the ease of exploitation, this vulnerability poses a significant risk to websites utilizing the affected plugin.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade the ProSolution WP Client plugin to the latest version (greater than 1.9.9) to patch CVE-2026-2942.\u003c/li\u003e\n\u003cli\u003eImplement a web application firewall (WAF) rule to block requests to 'proSol_fileUploadProcess' containing suspicious file extensions, mitigating the vulnerability even if patching is delayed.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for unusual activity, such as requests to newly uploaded files in the WordPress uploads directory, to detect potential exploitation attempts. Use a Sigma rule to identify such activity in webserver logs.\u003c/li\u003e\n\u003cli\u003eEnable and review WordPress audit logs for file modifications and plugin updates, providing insights into potential unauthorized changes.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-29T12:00:00Z","date_published":"2024-01-29T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-prosolution-wp-client-upload/","summary":"The ProSolution WP Client plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation, allowing unauthenticated attackers to upload arbitrary files, potentially leading to remote code execution.","title":"ProSolution WP Client Plugin Arbitrary File Upload Vulnerability (CVE-2026-2942)","url":"https://feed.craftedsignal.io/briefs/2024-01-prosolution-wp-client-upload/"}],"language":"en","title":"CraftedSignal Threat Feed - ProSolution WP Client","version":"https://jsonfeed.org/version/1.1"}