{"id":59439,"date":"2025-07-17T07:35:23","date_gmt":"2025-07-17T07:35:23","guid":{"rendered":""},"modified":"2025-09-11T17:54:40","modified_gmt":"2025-09-11T23:54:40","slug":"cve-2025-53371-critical-vulnerability-in-discordnotifications-mediawiki-extension","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-53371-critical-vulnerability-in-discordnotifications-mediawiki-extension\/","title":{"rendered":"<strong>CVE-2025-53371: Critical Vulnerability in DiscordNotifications MediaWiki Extension<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>This blog post delves into an important cybersecurity issue that could put a number of websites at risk. The vulnerability, tracked as CVE-2025-53371, affects DiscordNotifications, an extension for MediaWiki. This extension facilitates the sending of notifications of various actions on a wiki to a Discord channel. Cybersecurity researchers have discovered a significant flaw, which if exploited, could lead to Denial of Service (DOS), Server Side Request Forgery (SSRF), and potentially even <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-26074-remote-code-execution-vulnerability-in-orkes-conductor-v3-21-11\/\"  data-wpil-monitor-id=\"66576\">Remote Code Execution<\/a> (RCE). This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43232-critical-permissions-issue-allowing-app-to-bypass-privacy-preferences-in-macos\/\"  data-wpil-monitor-id=\"69101\">issue is highly critical<\/a> and, therefore, needs to be taken seriously by all MediaWiki users who have implemented this extension.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-53371<br \/>\nSeverity: Critical (9.1 CVSS Score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7419-critical-vulnerability-discovered-in-tenda-o3v2-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"69102\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-283850775\" 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>DiscordNotifications for MediaWiki | All versions before commit 1f20d850cbcce5b15951c7c6127b87b927a5415e<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability lies in the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40738-critical-arbitrary-file-write-vulnerability-in-sinec-nms\/\"  data-wpil-monitor-id=\"66575\">DiscordNotifications<\/a> extension\u2019s ability to send requests via curl and file_get_contents to arbitrary URLs set via $wgDiscordIncomingWebhookUrl and $wgDiscordAdditionalIncomingWebhookUrls. An attacker can exploit this by causing the server to read large files, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-20253-critical-vulnerability-in-ikev2-feature-of-cisco-software-could-lead-to-denial-of-service-dos-attack\/\"  data-wpil-monitor-id=\"76183\">leading to a DOS<\/a> attack.<br \/>\nMoreover, if there are internal unprotected <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-57157-unauthorised-access-to-sensitive-apis-in-jantent-v1-1\/\"  data-wpil-monitor-id=\"81744\">APIs that can be accessed<\/a> through HTTP POST requests, SSRF becomes possible. This could potentially <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7805-critical-vulnerability-in-tenda-fh451-1-0-0-9-leading-to-remote-buffer-overflow-attacks\/\"  data-wpil-monitor-id=\"69103\">lead to Remote<\/a> Code Execution (RCE), thereby putting the entire system at risk.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1483114272\" 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>Suppose an attacker knows the endpoint of an internal unprotected API. They could exploit this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8243-critical-buffer-overflow-vulnerability-in-totolink-x15-http-post-request-handler\/\"  data-wpil-monitor-id=\"69104\">vulnerability by sending an HTTP POST request<\/a> like the following:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/internal\/api\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{\n&quot;wgDiscordIncomingWebhookUrl&quot;: &quot;http:\/\/malicious.example.com\/largefile&quot;,\n&quot;wgDiscordAdditionalIncomingWebhookUrls&quot;: [&quot;http:\/\/malicious.example.com\/&quot;]\n}<\/code><\/pre>\n<p>In this example, the attacker is causing the server to make a request to their malicious server, which responds with a large file, causing a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-20136-denial-of-service-vulnerability-in-cisco-secure-firewall-asa-and-ftd-software\/\"  data-wpil-monitor-id=\"76922\">Denial of Service<\/a>. Additionally, if the endpoint is not properly secured, this could lead to SSRF or even <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43570-use-after-free-vulnerability-in-substance3d-stager\/\"  data-wpil-monitor-id=\"91538\">RCE<\/a>.<br \/>\nTo mitigate this vulnerability, users are advised to apply the patch provided by the vendor, which is available from commit 1f20d850cbcce5b15951c7c6127b87b927a5415e. Alternatively, as a temporary solution, usage of a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) is recommended.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview This blog post delves into an important cybersecurity issue that could put a number of websites at risk. The vulnerability, tracked as CVE-2025-53371, affects DiscordNotifications, an extension for MediaWiki. This extension facilitates the sending of notifications of various actions on a wiki to a Discord channel. Cybersecurity researchers have discovered a significant flaw, which [&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":[87,80,101],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59439","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-dos","attack_vector-rce","attack_vector-ssrf"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59439","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=59439"}],"version-history":[{"count":6,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59439\/revisions"}],"predecessor-version":[{"id":84681,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59439\/revisions\/84681"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=59439"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=59439"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=59439"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=59439"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=59439"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=59439"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=59439"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=59439"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=59439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}