{"id":38606,"date":"2025-05-16T01:05:14","date_gmt":"2025-05-16T01:05:14","guid":{"rendered":""},"modified":"2025-05-24T05:22:23","modified_gmt":"2025-05-24T05:22:23","slug":"cve-2025-3605-privilege-escalation-vulnerability-in-frontend-login-and-registration-blocks-plugin-for-wordpress","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-3605-privilege-escalation-vulnerability-in-frontend-login-and-registration-blocks-plugin-for-wordpress\/","title":{"rendered":"<strong>CVE-2025-3605: Privilege Escalation Vulnerability in Frontend Login and Registration Blocks Plugin for WordPress<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity landscape is riddled with innumerable threats and vulnerabilities, one of which is the CVE-2025-3605. This vulnerability exists within the Frontend Login and Registration Blocks plugin for WordPress, affecting all versions up to and including 1.0.7. The flaw can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47462-cross-site-request-forgery-vulnerability-in-ohidul-islam-challan-leading-to-privilege-escalation\/\"  data-wpil-monitor-id=\"43649\">lead to privilege<\/a> escalation via an account takeover, which can have severe consequences for the integrity and security of a system. It is a severe issue, particularly for websites powered by WordPress, which is one of the most widely used website <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46188-high-risk-sql-injection-vulnerability-in-sourcecodester-client-database-management-system-1-0\/\"  data-wpil-monitor-id=\"45188\">management systems<\/a> globally.<br \/>\nThe impact of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-2776-unauthenticated-xxe-vulnerability-in-sysaid-on-prem-leading-to-admin-account-takeover\/\"  data-wpil-monitor-id=\"43698\">vulnerability is elevated due to the possibility of unauthenticated<\/a> attackers changing arbitrary user email addresses. This flaw could allow an attacker to reset user passwords, including administrators&#8217;, thereby gaining unauthorized access to their accounts, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4347-d-link-router-buffer-overflow-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"43581\">potentially leading to system<\/a> compromise or data leakage.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-3605<br \/>\nSeverity: Critical (CVSS: 9.8)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30165-potential-system-compromise-in-vllm-v0-engine\/\"  data-wpil-monitor-id=\"44025\">System compromise<\/a>, data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-99259892\" class=\"ameeb-content-2 ameeb-entity-placement\"><div style=\"border-left: 4px solid #555; padding-left: 20px; margin: 48px 0; font-family: Roboto, sans-serif; color: #ffffff; line-height: 1.6; max-width: 720px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 22px; font-weight: 600; display: flex; align-items: center; letter-spacing: -0.02em;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 10px;\">\r\n      <img decoding=\"async\" src=\"https:\/\/www.ameeba.com\/blog\/wp-content\/uploads\/2025\/10\/Best-App-icon-Ameeba.png\" alt=\"Ameeba Chat Icon\" style=\"width: 42px; height: 42px;\" \/>\r\n    <\/a>\r\n    Share secrets securely\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 14px; color: #d1d5db;\">\r\n    Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 18px; color: #a1a1aa;\">\r\n    Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 24px; color: #e4e4e7;\">\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Encrypted identity<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Private Spaces for organizations and teams<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 End-to-end encrypted chat, calls, files, and notes<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Sensitive AI work and protected collaboration<\/li>\r\n    <li>\u2022 Built for information that cannot leak<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px; color: #ffffff;\">\r\n    Our mission is to secure human work alongside AI.\r\n  <\/p>\r\n\r\n  <div style=\"display: flex; flex-wrap: wrap; gap: 12px;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\/download\" style=\"background-color: #ffffff; color: #000000; padding: 10px 20px; text-decoration: none; border-radius: 8px; font-weight: 500;\">\r\n      Download Ameeba\r\n    <\/a>\r\n\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 8px; font-weight: 500;\">\r\n      Learn More\r\n    <\/a>\r\n  <\/div>\r\n<\/div><\/div>\n<p>Product | Affected Versions<\/p>\n<p><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4104-critical-privilege-escalation-vulnerability-in-frontend-dashboard-wordpress-plugin\/\"  data-wpil-monitor-id=\"44279\">Frontend Login and Registration Blocks Plugin for WordPress<\/a> | Up to and including 1.0.7<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40566-severe-user-session-vulnerability-in-simatic-pcs-neo-products\/\"  data-wpil-monitor-id=\"48859\">vulnerability is due to insufficient validation of a user&#8217;s<\/a> identity prior to updating their details such as email addresses. The flaw lies in the function flr_blocks_user_settings_handle_ajax_callback(), which does not properly validate a user&#8217;s identity. This allows an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46739-unauthenticated-brute-force-attack-leads-to-account-compromise\/\"  data-wpil-monitor-id=\"46400\">unauthenticated attacker<\/a> to send a malicious request to this function and change arbitrary user&#8217;s email addresses, including those of administrators.<br \/>\nThe attacker can then use the updated email address to reset the user&#8217;s password, thereby gaining <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45746-unauthorized-system-access-via-hardcoded-jwt-secret-in-zkt-zkbio-cvsecurity\/\"  data-wpil-monitor-id=\"48954\">unauthorized access<\/a> to their account. This can lead to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4372-webaudio-heap-corruption-in-google-chrome-a-potential-gateway-to-system-compromise-and-data-leakage\/\"  data-wpil-monitor-id=\"43807\">system compromise or data<\/a> leakage if the account belongs to an administrator or contains sensitive information.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3402460283\" class=\"ameeb-content ameeb-entity-placement\"><div class=\"poptin-embedded\" data-id=\"f6b387694f681\"><\/div>\r\n\r\n\r\n\r\n\r\n\r\n<\/div>\n<p>The following conceptual example demonstrates how the vulnerability might be exploited:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/wp-admin\/admin-ajax.php HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{\n&quot;action&quot;: &quot;flr_blocks_user_settings_handle_ajax_callback&quot;,\n&quot;user_id&quot;: &quot;1&quot;,\n&quot;user_email&quot;: &quot;attacker@example.com&quot;\n}<\/code><\/pre>\n<p>In the above example, the attacker sends a POST request to the &#8216;admin-ajax.php&#8217; endpoint with the action set to &#8216;flr_blocks_user_settings_handle_ajax_callback&#8217;, the user_id set to &#8216;1&#8217; (which typically represents the administrator), and the user_email changed to the attacker&#8217;s email.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>To mitigate the CVE-2025-3605 vulnerability, users are advised to apply the vendor patch as soon as it becomes available. Until then, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure to block any malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47533-cross-site-request-forgery-vulnerability-in-iqonic-design-graphina\/\"  data-wpil-monitor-id=\"44203\">requests attempting to exploit this vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity landscape is riddled with innumerable threats and vulnerabilities, one of which is the CVE-2025-3605. This vulnerability exists within the Frontend Login and Registration Blocks plugin for WordPress, affecting all versions up to and including 1.0.7. The flaw can lead to privilege escalation via an account takeover, which can have severe consequences for [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[76],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-38606","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-privilege-escalation"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38606","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/comments?post=38606"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38606\/revisions"}],"predecessor-version":[{"id":43631,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38606\/revisions\/43631"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=38606"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=38606"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=38606"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=38606"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=38606"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=38606"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=38606"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=38606"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=38606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}