{"id":71265,"date":"2025-09-04T16:47:09","date_gmt":"2025-09-04T16:47:09","guid":{"rendered":""},"modified":"2025-10-16T17:20:29","modified_gmt":"2025-10-16T23:20:29","slug":"cve-2025-55383-critical-file-upload-vulnerability-in-moss-before-v0-15","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-55383-critical-file-upload-vulnerability-in-moss-before-v0-15\/","title":{"rendered":"<strong>CVE-2025-55383: Critical File Upload Vulnerability in Moss Before v0.15<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>Today, we tackle a critical vulnerability identified as CVE-2025-55383, which affects the Moss platform before v0.15. This vulnerability is of utmost concern as it allows attackers to upload files with any extension to any location on the target server. Such a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7384-php-object-injection-vulnerability-in-wordpress-plugin-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"79045\">vulnerability can potentially compromise a system or lead<\/a> to significant data leakage, thereby posing a serious threat to the confidentiality, integrity, and availability of data.<br \/>\nThis <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31713-a-potential-privilege-escalation-vulnerability-due-to-command-injection\/\"  data-wpil-monitor-id=\"79470\">vulnerability stands out due<\/a> to its high severity score, which is an alarming 8.6. This score indicates the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41714-critical-vulnerability-in-upload-endpoint-causing-arbitrary-file-write-and-potential-remote-code-execution\/\"  data-wpil-monitor-id=\"89485\">potential damage it can cause<\/a> if left unpatched. For organizations relying heavily on Moss for their operations, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9018-unauthorized-modification-and-data-loss-vulnerability-in-time-tracker-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"90074\">vulnerability is a ticking time<\/a> bomb that needs immediate attention.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-55383<br \/>\nSeverity: High (8.6)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: System compromise and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49759-sql-injection-vulnerability-in-sql-server-potentially-enabling-privilege-escalation-and-data-leakage\/\"  data-wpil-monitor-id=\"79180\">potential data<\/a> leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2957166532\" 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>Moss | Before v0.15<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of a misconfiguration in the &#8220;upload&#8221; function of Moss. This misconfiguration allows an attacker to bypass security restrictions and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6079-arbitrary-file-upload-vulnerability-in-school-management-system-for-wordpress-plugin\/\"  data-wpil-monitor-id=\"80600\">upload files<\/a> of any extension to any location on the target server. The attacker can upload a malicious script or <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53415-remote-code-execution-vulnerability-in-delta-electronics-dtm-soft-project-file-parsing\/\"  data-wpil-monitor-id=\"79089\">executable file<\/a>, which can then be executed to compromise the system or to leak sensitive data.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1824937474\" 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 is a conceptual example of how an attacker might exploit this vulnerability. This is a sample HTTP POST request to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53251-unrestricted-file-upload-vulnerability-in-an-themes-pin-wp\/\"  data-wpil-monitor-id=\"81376\">upload a malicious file<\/a> to the server:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/upload\/file HTTP\/1.1\nHost: target.example.com\nContent-Type: multipart\/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW\n------WebKitFormBoundary7MA4YWxkTrZu0gW\nContent-Disposition: form-data; name=&quot;file&quot;; filename=&quot;malicious_script.sh&quot;\nContent-Type: application\/x-sh\n{ &quot;malicious_script&quot;: &quot;...&quot; }\n------WebKitFormBoundary7MA4YWxkTrZu0gW--<\/code><\/pre>\n<p><strong>Mitigation<\/strong><\/p>\n<p>The best mitigation for this vulnerability is to apply the vendor patch. It is strongly recommended to upgrade to a version of Moss that is v0.15 or later. Until the patch can be applied, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as a temporary mitigation measure. These systems can be configured to block or alert on suspicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6715-critical-local-file-inclusion-vulnerability-in-latepoint-wordpress-plugin\/\"  data-wpil-monitor-id=\"78879\">file uploads that may be attempts to exploit this vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview Today, we tackle a critical vulnerability identified as CVE-2025-55383, which affects the Moss platform before v0.15. This vulnerability is of utmost concern as it allows attackers to upload files with any extension to any location on the target server. Such a vulnerability can potentially compromise a system or lead to significant data leakage, thereby [&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":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-71265","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/71265","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=71265"}],"version-history":[{"count":9,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/71265\/revisions"}],"predecessor-version":[{"id":82957,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/71265\/revisions\/82957"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=71265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=71265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=71265"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=71265"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=71265"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=71265"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=71265"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=71265"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=71265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}