{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/products/the-widget-options--advanced-conditional-visibility-for-gutenberg-blocks--classic-widgets-plugin--4.2.2/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":8.8,"id":"CVE-2026-2052"}],"_cs_exploited":false,"_cs_products":["The Widget Options – Advanced Conditional Visibility for Gutenberg Blocks \u0026 Classic Widgets plugin \u003c= 4.2.2"],"_cs_severities":["critical"],"_cs_tags":["wordpress","rce","plugin"],"_cs_type":"advisory","_cs_vendors":["WordPress"],"content_html":"\u003cp\u003eThe Widget Options – Advanced Conditional Visibility for Gutenberg Blocks \u0026amp; Classic Widgets plugin, versions 4.2.2 and earlier, contains a Remote Code Execution (RCE) vulnerability (CVE-2026-2052). This flaw stems from the plugin\u0026rsquo;s Display Logic feature, which utilizes the \u003ccode\u003eeval()\u003c/code\u003e function to process user-supplied expressions. The plugin\u0026rsquo;s implemented blocklist/allowlist is insufficient, making it bypassable through techniques involving \u003ccode\u003earray_map\u003c/code\u003e with string concatenation. Furthermore, the plugin lacks proper authorization enforcement on the \u003ccode\u003eextended_widget_opts_block\u003c/code\u003e attribute. This vulnerability allows authenticated attackers with Contributor-level access or higher to inject and execute arbitrary code on the underlying server. The vendor partially addressed this vulnerability in version 4.2.0.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker authenticates to the WordPress application as a Contributor or higher-level user.\u003c/li\u003e\n\u003cli\u003eThe attacker navigates to the Widget Options settings within the WordPress admin panel.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious Display Logic expression designed to execute arbitrary PHP code. This involves bypassing the blocklist/allowlist using techniques such as \u003ccode\u003earray_map\u003c/code\u003e and string concatenation.\u003c/li\u003e\n\u003cli\u003eThe attacker injects the malicious Display Logic expression into the \u003ccode\u003eextended_widget_opts_block\u003c/code\u003e attribute.\u003c/li\u003e\n\u003cli\u003eThe WordPress application processes the widget options, including the malicious Display Logic expression. Due to the lack of proper sanitization and authorization, the \u003ccode\u003eeval()\u003c/code\u003e function executes the attacker-supplied PHP code.\u003c/li\u003e\n\u003cli\u003eThe attacker\u0026rsquo;s code executes with the permissions of the web server user, potentially allowing the attacker to read or write files, execute system commands, or compromise the entire server.\u003c/li\u003e\n\u003cli\u003eThe attacker may establish persistence by writing a backdoor to a file on the server or by creating a new administrator account.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-2052 allows an attacker to execute arbitrary code on the WordPress server. This can lead to complete compromise of the website, including data theft, defacement, and the installation of malware. Since the vulnerability requires Contributor access or higher, the impact is significant if such accounts are compromised through other means (e.g., phishing, credential stuffing). The lack of proper input sanitization and authorization makes this a critical vulnerability.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade the \u0026ldquo;The Widget Options – Advanced Conditional Visibility for Gutenberg Blocks \u0026amp; Classic Widgets\u0026rdquo; plugin to the latest version to patch CVE-2026-2052.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026ldquo;Detect WordPress Widget Options RCE Attempt\u0026rdquo; to your SIEM to detect exploitation attempts.\u003c/li\u003e\n\u003cli\u003eReview user roles and permissions to minimize the number of users with Contributor or higher-level access.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for unusual activity, particularly requests to \u003ccode\u003e/wp-admin/options.php\u003c/code\u003e related to widget options.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-02T08:16:27Z","date_published":"2026-05-02T08:16:27Z","id":"/briefs/2026-05-wordpress-widget-rce/","summary":"The Widget Options plugin for WordPress is vulnerable to Remote Code Execution (CVE-2026-2052) due to insufficient input sanitization in the Display Logic feature, allowing authenticated attackers with Contributor-level access and above to execute arbitrary code on the server.","title":"WordPress Widget Options Plugin Remote Code Execution Vulnerability (CVE-2026-2052)","url":"https://feed.craftedsignal.io/briefs/2026-05-wordpress-widget-rce/"}],"language":"en","title":"CraftedSignal Threat Feed — The Widget Options – Advanced Conditional Visibility for Gutenberg Blocks \u0026 Classic Widgets Plugin \u003c= 4.2.2","version":"https://jsonfeed.org/version/1.1"}