{"id":44955,"date":"2025-05-28T14:06:47","date_gmt":"2025-05-28T14:06:47","guid":{"rendered":""},"modified":"2025-09-05T08:18:09","modified_gmt":"2025-09-05T14:18:09","slug":"cve-2025-4094-critical-vulnerability-in-wordpress-mobile-number-signup-and-login-plugin","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-4094-critical-vulnerability-in-wordpress-mobile-number-signup-and-login-plugin\/","title":{"rendered":"<strong>CVE-2025-4094: Critical Vulnerability in WordPress Mobile Number Signup and Login Plugin<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The recent discovery of a severe vulnerability in the DIGITS: WordPress Mobile Number Signup and Login plugin has sent shockwaves through the cybersecurity community. This blog post will explore all aspects of this vulnerability, officially identified as CVE-2025-4094, which impacts any website using versions of the plugin before 8.4.6.1. Given the widespread use of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4391-wordpress-echo-rss-feed-post-generator-plugin-arbitrary-file-upload-vulnerability\/\"  data-wpil-monitor-id=\"50858\">WordPress and this specific plugin<\/a>, this vulnerability presents a significant risk to a large number of websites, potentially leaving them at the mercy of malicious actors.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-4094<br \/>\nSeverity: Critical (CVSS score: 9.8)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-22190-critical-gitpython-vulnerability-exposes-windows-systems-to-potential-compromise\/\"  data-wpil-monitor-id=\"51324\">System compromise and potential<\/a> data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-749607192\" 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: 700px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 20px; font-weight: 600; display: flex; align-items: center;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 8px;\">\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: 40px; height: 40px;\" \/>\r\n    <\/a>\r\n    A new way to communicate\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 12px;\">\r\n    Ameeba Chat is built on encrypted identity, not personal profiles.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 16px;\">\r\n    Message, call, share files, and coordinate with identities kept separate.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 20px;\">\r\n    <li>\u2022 Encrypted identity<\/li>\r\n    <li>\u2022 Ameeba Chat authenticates access<\/li>\r\n    <li>\u2022 Aliases and categories<\/li>\r\n    <li>\u2022 End-to-end encrypted chat, calls, and files<\/li>\r\n    <li>\u2022 Secure notes for sensitive information<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px;\">\r\n    Private communication, rethought.\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: 6px; font-weight: 500;\">Download Ameeba Chat<\/a>\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Learn More<\/a>\r\n  <\/div>\r\n<\/div>\r\n<\/div>\n<p>Product | Affected Versions<\/p>\n<p>DIGITS: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31914-critical-sql-injection-vulnerability-in-pixel-wordpress-form-builder-plugin-autoresponder\/\"  data-wpil-monitor-id=\"54795\">WordPress Mobile Number Signup and Login plugin<\/a> | Versions before 8.4.6.1<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability stems from the lack of rate limiting on OTP (One-Time Password) <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2022-3604-data-validation-vulnerability-in-contact-form-entries-wordpress-plugin\/\"  data-wpil-monitor-id=\"52147\">validation attempts in the affected WordPress<\/a> plugin. Without a rate limit, attackers can continuously send OTP validation attempts, effectively enabling them to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7393-critical-brute-force-vulnerability-in-drupal-mail-login\/\"  data-wpil-monitor-id=\"69395\">brute force<\/a> the OTP. Once the OTP is successfully brute-forced, an attacker can bypass authentication controls and gain unauthorized access to the system, potentially <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4809-critical-vulnerability-in-tenda-ac7-router-leads-to-system-compromise\/\"  data-wpil-monitor-id=\"50607\">leading to system<\/a> compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1927117225\" 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>Below is a conceptual example of how this vulnerability might be exploited. This is a simple Python script that sends continuous OTP validation attempts:<\/p>\n<pre><code class=\"\" data-line=\"\">import requests\ntarget_url = &#039;http:\/\/targetsite.com\/otp_validation&#039;\n# Assume the OTP is a 6-digit number\nfor otp in range(100000, 999999):\npayload = {&#039;otp&#039;: str(otp)}\nresponse = requests.post(target_url, data=payload)\nif &#039;success&#039; in response.text:\nprint(&#039;OTP Cracked: &#039; + str(otp))\nbreak<\/code><\/pre>\n<p>In this hypothetical scenario, the script is sending OTP validation requests with all possible 6-digit combinations until a successful validation response is received, indicating that the OTP has been cracked.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>The vendor has released a patch to address this vulnerability, and it is highly recommended to update the DIGITS: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5117-wordpress-property-plugin-privilege-escalation-vulnerability\/\"  data-wpil-monitor-id=\"55850\">WordPress Mobile Number Signup and Login plugin<\/a> to version 8.4.6.1 or later. In the meantime, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide temporary mitigation by detecting and blocking <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-9342-high-risk-login-brute-force-vulnerability-in-eclipse-glassfish\/\"  data-wpil-monitor-id=\"79125\">brute force<\/a> attempts. However, this should not replace the need to update the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39389-sql-injection-vulnerability-in-solid-plugins-analyticswp\/\"  data-wpil-monitor-id=\"52699\">plugin as the ultimate solution to this vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The recent discovery of a severe vulnerability in the DIGITS: WordPress Mobile Number Signup and Login plugin has sent shockwaves through the cybersecurity community. This blog post will explore all aspects of this vulnerability, officially identified as CVE-2025-4094, which impacts any website using versions of the plugin before 8.4.6.1. Given the widespread use of [&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":[75],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-44955","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-authentication-bypass"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/44955","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=44955"}],"version-history":[{"count":9,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/44955\/revisions"}],"predecessor-version":[{"id":71533,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/44955\/revisions\/71533"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=44955"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=44955"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=44955"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=44955"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=44955"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=44955"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=44955"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=44955"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=44955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}