{"id":56846,"date":"2025-07-03T11:13:32","date_gmt":"2025-07-03T11:13:32","guid":{"rendered":""},"modified":"2025-08-30T04:39:14","modified_gmt":"2025-08-30T10:39:14","slug":"cve-2025-6688-authentication-bypass-vulnerability-in-simple-payment-plugin-for-wordpress","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6688-authentication-bypass-vulnerability-in-simple-payment-plugin-for-wordpress\/","title":{"rendered":"<strong>CVE-2025-6688: Authentication Bypass Vulnerability in Simple Payment Plugin for WordPress<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The Simple Payment plugin for WordPress, a popular tool for integrating payment systems into websites, has been identified as having a major security vulnerability that could jeopardize the integrity of WordPress sites globally. This vulnerability, cataloged as CVE-2025-6688, affects versions 1.3.6 to 2.3.8 of the plugin and can allow attackers to bypass authentication systems, potentially gaining administrative access and control over a site.<br \/>\nThe severity and breadth of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49132-critical-arbitrary-code-execution-vulnerability-in-pterodactyl-game-server-management-panel\/\"  data-wpil-monitor-id=\"63306\">vulnerability make it a critical<\/a> concern for any business or individual utilizing the Simple Payment plugin in their WordPress installation. Mitigation should be a priority due to the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6370-critical-vulnerability-in-d-link-dir-619l-2-06b01-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"63416\">potential for system<\/a> compromise or data leakage.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-6688<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-2025-5867-critical-vulnerability-in-rt-thread-5-1-0-leading-to-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"64452\">System compromise<\/a>, data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2388876715\" 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>Simple Payment <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6755-wordpress-plugin-vulnerability-leads-to-arbitrary-file-deletion\/\"  data-wpil-monitor-id=\"65626\">Plugin for WordPress<\/a> | 1.3.6 &#8211; 2.3.8<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52921-critical-vulnerability-in-innoshop-allows-code-execution-by-authenticated-attackers\/\"  data-wpil-monitor-id=\"63499\">vulnerability lies in the plugin&#8217;s mishandling of user authentication<\/a>. The create_user() function within the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4334-critical-privilege-escalation-vulnerability-in-simple-user-registration-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"64926\">plugin does not properly verify a user&#8217;s<\/a> identity before logging them in. This design flaw presents an opportunity for unauthenticated attackers to exploit this function and bypass the usual login process, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-47294-critical-vulnerability-in-ncr-terminal-handler-v1-5-1-allows-user-account-manipulation\/\"  data-wpil-monitor-id=\"63756\">allowing them to impersonate administrative users<\/a>.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1162570711\" 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 pseudocode <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49526-out-of-bounds-write-vulnerability-in-illustrator-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"75275\">illustrates how the vulnerability<\/a> might be exploited:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/wp-login.php HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;username&quot;: &quot;admin&quot;, &quot;password&quot;: &quot;&quot;, &quot;remember&quot;: &quot;true&quot; }<\/code><\/pre>\n<p>In this conceptual example, an attacker sends a POST request to the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6441-unauthenticated-login-token-generation-vulnerability-in-webinarignition-wordpress-plugin\/\"  data-wpil-monitor-id=\"68922\">login page of the WordPress<\/a> site hosted on target.example.com. The username parameter is set to &#8220;admin&#8221;, and the password parameter is left empty. The remember parameter is set to &#8220;true&#8221;, indicating that the session should be persistent. If the site is running a vulnerable version of the Simple Payment plugin, this request could allow the attacker to log in as an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-51978-unauthenticated-default-administrator-password-generation\/\"  data-wpil-monitor-id=\"64451\">administrative user without providing a valid password<\/a>.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>To mitigate this vulnerability, users of the Simple Payment <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7696-critical-php-object-injection-vulnerability-in-wordpress-plugin-integration\/\"  data-wpil-monitor-id=\"70898\">plugin for WordPress<\/a> should apply the vendor&#8217;s patch as soon as it becomes available. In the meantime, implementing a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) could serve as a temporary mitigation strategy to help protect against <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6510-critical-vulnerability-in-netgear-ex6100-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"63669\">potential attacks exploiting this vulnerability<\/a>. Regularly updating and patching software is a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5121-critical-security-vulnerability-in-gitlab-ce-ee\/\"  data-wpil-monitor-id=\"63734\">critical component of maintaining a secure<\/a> online presence.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The Simple Payment plugin for WordPress, a popular tool for integrating payment systems into websites, has been identified as having a major security vulnerability that could jeopardize the integrity of WordPress sites globally. This vulnerability, cataloged as CVE-2025-6688, affects versions 1.3.6 to 2.3.8 of the plugin and can allow attackers to bypass authentication systems, [&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-56846","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\/56846","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=56846"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/56846\/revisions"}],"predecessor-version":[{"id":67851,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/56846\/revisions\/67851"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=56846"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=56846"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=56846"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=56846"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=56846"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=56846"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=56846"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=56846"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=56846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}