{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/amelia/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":8.8,"id":"CVE-2026-5465"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["critical"],"_cs_tags":["wordpress","amelia","idor","privilege-escalation"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eThe Amelia WordPress plugin, specifically the \u0026ldquo;Booking for Appointments and Events Calendar\u0026rdquo;, contains an Insecure Direct Object Reference (IDOR) vulnerability (CVE-2026-5465) in versions up to and including 2.1.3. This flaw resides within the \u003ccode\u003eUpdateProviderCommandHandler\u003c/code\u003e and stems from insufficient validation when a Provider (Employee) user modifies their profile. The critical issue is the ability to manipulate the \u003ccode\u003eexternalId\u003c/code\u003e field, which directly corresponds to a WordPress user ID. By injecting an arbitrary \u003ccode\u003eexternalId\u003c/code\u003e value during a profile update, an authenticated attacker with Provider-level access or higher can bypass authorization checks. This oversight permits the attacker to execute functions such as \u003ccode\u003ewp_set_password()\u003c/code\u003e and \u003ccode\u003ewp_update_user()\u003c/code\u003e on behalf of any other user, including those with Administrator privileges. This vulnerability allows for complete account takeover, representing a significant risk for organizations utilizing the vulnerable plugin.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker gains authenticated access to a WordPress instance with the Amelia plugin installed, possessing at least Provider (Employee) level privileges.\u003c/li\u003e\n\u003cli\u003eThe attacker navigates to their user profile within the Amelia plugin interface.\u003c/li\u003e\n\u003cli\u003eThe attacker intercepts the HTTP request generated when updating their profile using a tool like Burp Suite or browser developer tools.\u003c/li\u003e\n\u003cli\u003eThe attacker modifies the \u003ccode\u003eexternalId\u003c/code\u003e parameter within the intercepted HTTP request, replacing its original value with the WordPress user ID of the target account they wish to compromise (e.g., the Administrator account, typically user ID 1).\u003c/li\u003e\n\u003cli\u003eThe attacker sends the modified HTTP request to the server.\u003c/li\u003e\n\u003cli\u003eDue to the IDOR vulnerability, the \u003ccode\u003eUpdateProviderCommandHandler\u003c/code\u003e fails to validate the manipulated \u003ccode\u003eexternalId\u003c/code\u003e value.\u003c/li\u003e\n\u003cli\u003eThe Amelia plugin\u0026rsquo;s backend utilizes the attacker-controlled \u003ccode\u003eexternalId\u003c/code\u003e to call \u003ccode\u003ewp_set_password()\u003c/code\u003e and/or \u003ccode\u003ewp_update_user()\u003c/code\u003e on the target account.\u003c/li\u003e\n\u003cli\u003eThe attacker successfully changes the password or other profile details of the target account, achieving complete account takeover and escalating privileges.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-5465 allows an attacker with minimal privileges (Provider/Employee role) to compromise any other account on the WordPress instance, including Administrator accounts. This grants the attacker full control over the WordPress site, enabling them to install malicious plugins, modify content, exfiltrate sensitive data, or further compromise the underlying server. The number of potential victims is directly proportional to the number of websites utilizing the vulnerable Amelia plugin. Given the plugin\u0026rsquo;s popularity, a successful mass exploitation could impact thousands of websites across various sectors.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eImmediately update the Amelia WordPress plugin to the latest version (greater than 2.1.3) to patch CVE-2026-5465.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for POST requests to the \u003ccode\u003e/wp-admin/admin-ajax.php\u003c/code\u003e endpoint with the \u003ccode\u003eaction\u003c/code\u003e parameter set to \u003ccode\u003eam_update_provider\u003c/code\u003e and a modified \u003ccode\u003eexternalId\u003c/code\u003e parameter in the request body. Implement the Sigma rule \u003ccode\u003eDetect Amelia Plugin IDOR Attack\u003c/code\u003e to detect such activity.\u003c/li\u003e\n\u003cli\u003eImplement strong password policies and multi-factor authentication for all WordPress accounts, including those with limited privileges, to mitigate the impact of potential account compromises.\u003c/li\u003e\n\u003cli\u003eReview and audit existing WordPress user accounts and their assigned roles to identify and remove any unnecessary or excessive privileges.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-07T07:16:24Z","date_published":"2026-04-07T07:16:24Z","id":"/briefs/2026-04-amelia-idor/","summary":"The Amelia WordPress plugin is vulnerable to an insecure direct object reference, allowing authenticated attackers with Provider-level access or higher to escalate privileges and gain persistence by taking over any WordPress account, including Administrator by manipulating the `externalId` field.","title":"Amelia WordPress Plugin IDOR Vulnerability CVE-2026-5465","url":"https://feed.craftedsignal.io/briefs/2026-04-amelia-idor/"}],"language":"en","title":"CraftedSignal Threat Feed — Amelia","version":"https://jsonfeed.org/version/1.1"}