{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-39467/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.2,"id":"CVE-2026-39467"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["wordpress","object-injection","deserialization","cve-2026-39467"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eCVE-2026-39467 is a critical vulnerability affecting the MetaSlider Responsive Slider plugin for WordPress. Specifically, it is a Deserialization of Untrusted Data vulnerability that can lead to Object Injection. The vulnerability exists in versions up to and including 3.106.0. An attacker can exploit this vulnerability to inject arbitrary PHP objects into the application, potentially leading to remote code execution. This is possible because the plugin deserializes data without proper validation, allowing malicious actors to manipulate serialized data and inject harmful objects. The vulnerability was reported by Patchstack. Given the widespread use of WordPress and the MetaSlider plugin, this vulnerability poses a significant risk to a large number of websites.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker sends a crafted HTTP request to a WordPress endpoint that processes MetaSlider plugin data.\u003c/li\u003e\n\u003cli\u003eThe request contains a serialized PHP object designed for malicious purposes.\u003c/li\u003e\n\u003cli\u003eThe MetaSlider plugin deserializes the untrusted data without proper sanitization or validation using \u003ccode\u003eunserialize()\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eThe deserialization process instantiates the malicious PHP object.\u003c/li\u003e\n\u003cli\u003eThe injected object executes its malicious payload, potentially writing files to the server.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the file write capability to plant a PHP webshell in the WordPress uploads directory.\u003c/li\u003e\n\u003cli\u003eThe attacker accesses the webshell via a direct HTTP request.\u003c/li\u003e\n\u003cli\u003eThe attacker executes arbitrary commands on the server via the webshell, gaining full control.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-39467 allows an unauthenticated attacker to inject arbitrary PHP objects, leading to remote code execution on the target WordPress server. This could result in complete compromise of the website, including data theft, defacement, or further attacks on internal networks. Given the popularity of MetaSlider, potentially thousands of websites are vulnerable.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade the MetaSlider Responsive Slider plugin to the latest version to patch CVE-2026-39467.\u003c/li\u003e\n\u003cli\u003eImplement the Sigma rule \u003ccode\u003eDetect MetaSlider Object Injection Attempt\u003c/code\u003e to detect exploitation attempts in web server logs.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious POST requests containing serialized PHP objects to WordPress endpoints.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-21T10:16:29Z","date_published":"2026-04-21T10:16:29Z","id":"/briefs/2026-04-metaslider-deserialization/","summary":"A deserialization of untrusted data vulnerability in the MetaSlider Responsive Slider plugin for WordPress (versions up to 3.106.0) allows for unauthenticated object injection, potentially leading to remote code execution.","title":"MetaSlider Responsive Slider Plugin Deserialization Vulnerability (CVE-2026-39467)","url":"https://feed.craftedsignal.io/briefs/2026-04-metaslider-deserialization/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-39467","version":"https://jsonfeed.org/version/1.1"}