{"id":44745,"date":"2025-05-26T20:48:17","date_gmt":"2025-05-26T20:48:17","guid":{"rendered":""},"modified":"2025-08-30T05:18:19","modified_gmt":"2025-08-30T11:18:19","slug":"cve-2025-26892-critical-file-upload-vulnerability-in-celestial-aura","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-26892-critical-file-upload-vulnerability-in-celestial-aura\/","title":{"rendered":"<strong>CVE-2025-26892: Critical File Upload Vulnerability in Celestial Aura<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the rapidly evolving landscape of cybersecurity, the recent discovery of a severe vulnerability, CVE-2025-26892, in the Celestial Aura system has raised serious concerns. This vulnerability allows for unrestricted upload of files with dangerous types, leading to potential misuse of malicious files. It pertains to Celestial Aura versions up to 2.2, thus impacting all users of these versions. The severity of this issue is reflected in its high CVSS Severity Score of 9.9, indicating the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-22190-critical-gitpython-vulnerability-exposes-windows-systems-to-potential-compromise\/\"  data-wpil-monitor-id=\"51343\">potential for significant system<\/a> compromise or data leakage. In this post, we will delve <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49693-a-deep-dive-into-double-free-vulnerability-in-microsoft-brokering-file-system\/\"  data-wpil-monitor-id=\"75315\">deep into the nature of this vulnerability<\/a>, its impact, and the recommended mitigation strategies.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-26892<br \/>\nSeverity: Critical (9.9)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-52880-critical-vulnerability-in-insyde-insydeh2o-kernels-potentially-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"51428\">System compromise and potential<\/a> data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2242955283\" 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>Celestial Aura | Up to 2.2<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of the unrestricted <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4564-arbitrary-file-deletion-vulnerability-in-ticketbai-facturas-para-woocommerce-plugin\/\"  data-wpil-monitor-id=\"50155\">file upload vulnerability<\/a> in Celestial Aura. An attacker, without needing any special privileges or user interaction, can <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=\"50848\">upload a malicious file<\/a> to the system. Since the system does not enforce any file type restrictions, the attacker can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4389-arbitrary-file-upload-vulnerability-in-wordpress-crawlomatic-multipage-scraper-post-generator-plugin\/\"  data-wpil-monitor-id=\"51085\">upload a file<\/a> designed to compromise the system or cause data leakage. Once uploaded, the file can be executed within the system, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4809-critical-vulnerability-in-tenda-ac7-router-leads-to-system-compromise\/\"  data-wpil-monitor-id=\"50596\">leading to potential system<\/a> compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3476621917\" 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>Here&#8217;s a conceptual example of how an attacker might <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45997-exploiting-file-upload-vulnerability-in-web-based-pharmacy-product-management-system\/\"  data-wpil-monitor-id=\"56846\">exploit this vulnerability<\/a>. In this case, it&#8217;s a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4827-critical-buffer-overflow-vulnerability-in-totolink-http-post-request-handler\/\"  data-wpil-monitor-id=\"51086\">HTTP request<\/a> to upload a malicious file to the system:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/upload\/file HTTP\/1.1\nHost: target.celestialaura.com\nContent-Type: application\/octet-stream\nContent-Disposition: form-data; name=&quot;file&quot;; filename=&quot;malicious.exe&quot;\n{binary data}<\/code><\/pre>\n<p>In this example, the attacker is <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39401-unrestricted-file-upload-leading-to-potential-system-compromise-in-mojoomla-wpams\/\"  data-wpil-monitor-id=\"52049\">uploading a malicious executable file<\/a> named &#8220;malicious.exe. The binary data represents the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24189-memory-corruption-vulnerability-due-to-maliciously-crafted-web-content-in-various-operating-systems\/\"  data-wpil-monitor-id=\"51752\">contents of the malicious<\/a> file.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>The best way to mitigate this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4578-sql-injection-vulnerability-in-file-provider-wordpress-plugin\/\"  data-wpil-monitor-id=\"58817\">vulnerability is to apply the patch provided<\/a> by the vendor. If a patch is not immediately available or cannot be applied right away, a temporary mitigation strategy can be the use of a Web Application Firewall (WAF) or an Intrusion Detection System (IDS). These <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39380-mojoomla-hospital-management-system-file-upload-vulnerability\/\"  data-wpil-monitor-id=\"52018\">systems can monitor and block potentially malicious file uploads<\/a>, providing a layer of protection until the official patch can be applied.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the rapidly evolving landscape of cybersecurity, the recent discovery of a severe vulnerability, CVE-2025-26892, in the Celestial Aura system has raised serious concerns. This vulnerability allows for unrestricted upload of files with dangerous types, leading to potential misuse of malicious files. It pertains to Celestial Aura versions up to 2.2, thus impacting all [&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-44745","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\/44745","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=44745"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/44745\/revisions"}],"predecessor-version":[{"id":67881,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/44745\/revisions\/67881"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=44745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=44745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=44745"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=44745"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=44745"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=44745"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=44745"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=44745"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=44745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}