{"id":3005,"date":"2025-05-05T14:33:00","date_gmt":"2025-05-05T14:33:00","guid":{"rendered":"http:\/\/localhost\/?p=3005"},"modified":"2025-05-05T14:33:00","modified_gmt":"2025-05-05T14:33:00","slug":"cve-2025-46340-misskey-css-style-injection-vulnerability-in-mkurlpreview","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=3005","title":{"rendered":"CVE-2025-46340 Misskey CSS Style Injection Vulnerability In `MkUrlPreview`"},"content":{"rendered":"<div class=\"vulnerability-details\">\n<h2>Vulnerability Details<\/h2>\n<div class=\"info-section\">\n<h3>Basic Information<\/h3>\n<table class=\"info-table\">\n<tr>\n<th>Title<\/th>\n<td>CVE-2025-46340 Misskey CSS Style Injection Vulnerability In `MkUrlPreview`<\/td>\n<\/tr>\n<tr>\n<th>Type<\/th>\n<td>cvelist<\/td>\n<\/tr>\n<tr>\n<th>Published<\/th>\n<td>2025-05-05T18:35:37<\/td>\n<\/tr>\n<tr>\n<th>Last Seen<\/th>\n<td>2025-05-05T19:02:11<\/td>\n<\/tr>\n<tr>\n<th>CVSS Score<\/th>\n<td style=\"color: #ff6600; font-weight: bold;\">7.2 (HIGH)<\/td>\n<\/tr>\n<\/table><\/div>\n<div class=\"cvss-section\">\n<h3>CVSS v3 Details<\/h3>\n<table class=\"cvss-table\">\n<tr>\n<th>Attack Vector<\/th>\n<td>NETWORK<\/td>\n<\/tr>\n<tr>\n<th>Attack Complexity<\/th>\n<td>LOW<\/td>\n<\/tr>\n<tr>\n<th>Privileges Required<\/th>\n<td>NONE<\/td>\n<\/tr>\n<tr>\n<th>User Interaction<\/th>\n<td>NONE<\/td>\n<\/tr>\n<tr>\n<th>Scope<\/th>\n<td>CHANGED<\/td>\n<\/tr>\n<tr>\n<th>Confidentiality Impact<\/th>\n<td>LOW<\/td>\n<\/tr>\n<tr>\n<th>Integrity Impact<\/th>\n<td>LOW<\/td>\n<\/tr>\n<tr>\n<th>Availability Impact<\/th>\n<td>NONE<\/td>\n<\/tr>\n<\/table><\/div>\n<div class=\"cve-section\">\n<h3>CVE Information<\/h3>\n<table class=\"cve-table\">\n<tr>\n<th>CVE IDs<\/th>\n<td>CVE-2025-46340<\/td>\n<\/tr>\n<tr>\n<th>CWE<\/th>\n<td>CWE-20, CWE-116<\/td>\n<\/tr>\n<tr>\n<th>Bulletin Family<\/th>\n<td>cve<\/td>\n<\/tr>\n<\/table><\/div>\n<div class=\"description-section\">\n<h3>Description<\/h3>\n<div class=\"description-content\">\n            Misskey is an open source, federated social media platform. Starting in version 12.0.0 and prior to version 2025.4.1, due to an oversight in the validation performed in UrlPreviewService and MkUrlPreview, it is possible for an attacker to&#8230;\n        <\/div>\n<\/p><\/div>\n<div class=\"impact-section\">\n<h3>Impact Assessment<\/h3>\n<table class=\"impact-table\">\n<tr>\n<th>Base Score<\/th>\n<td>7.2<\/td>\n<\/tr>\n<tr>\n<th>Severity<\/th>\n<td style=\"color: #ff6600;\">HIGH<\/td>\n<\/tr>\n<\/table><\/div>\n<div class=\"source-link\">\n<p><a href=\"https:\/\/www.cve.org\/CVERecord?id=CVE-2025-46340\" target=\"_blank\">View full CVE details<\/a><\/p>\n<\/p><\/div>\n<\/div>\n<style>\n.vulnerability-details {\n    font-family: Arial, sans-serif;\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 20px;\n}<\/p>\n<p>.info-section, .cvss-section, .cve-section, .description-section, .impact-section {\n    margin-bottom: 30px;\n    background: #f8f9fa;\n    padding: 20px;\n    border-radius: 8px;\n    box-shadow: 0 2px 4px rgba(0,0,0,0.1);\n}<\/p>\n<p>h2 {\n    color: #2c3e50;\n    border-bottom: 2px solid #3498db;\n    padding-bottom: 10px;\n    margin-bottom: 20px;\n}<\/p>\n<p>h3 {\n    color: #34495e;\n    margin-bottom: 15px;\n}<\/p>\n<p>.info-table, .cvss-table, .cve-table, .impact-table {\n    width: 100%;\n    border-collapse: collapse;\n    margin-bottom: 20px;\n}<\/p>\n<p>.info-table th, .cvss-table th, .cve-table th, .impact-table th {\n    background: #e9ecef;\n    padding: 12px;\n    text-align: left;\n    width: 200px;\n}<\/p>\n<p>.info-table td, .cvss-table td, .cve-table td, .impact-table td {\n    padding: 12px;\n    border-bottom: 1px solid #dee2e6;\n}<\/p>\n<p>.description-content {\n    line-height: 1.6;\n    color: #2c3e50;\n}<\/p>\n<p>.source-link {\n    text-align: center;\n    margin-top: 30px;\n}<\/p>\n<p>.source-link a {\n    display: inline-block;\n    padding: 10px 20px;\n    background: #3498db;\n    color: white;\n    text-decoration: none;\n    border-radius: 5px;\n    transition: background 0.3s;\n}<\/p>\n<p>.source-link a:hover {\n    background: #2980b9;\n}\n<\/style>\n","protected":false},"excerpt":{"rendered":"<p>Vulnerability Details Basic Information Title CVE-2025-46340 Misskey CSS Style Injection Vulnerability In `MkUrlPreview` Type cvelist Published 2025-05-05T18:35:37 Last Seen 2025-05-05T19:02:11 CVSS Score 7.2 (HIGH) CVSS&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[6,24,8,39,12,15,13,7,11,5],"class_list":["post-3005","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-cve","tag-cvelist","tag-cvss","tag-cvss-72","tag-exploit","tag-high","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - 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