{"id":59799,"date":"2025-08-01T11:25:54","date_gmt":"2025-08-01T11:25:54","guid":{"rendered":""},"modified":"2025-10-01T12:32:09","modified_gmt":"2025-10-01T18:32:09","slug":"cve-2025-46199-critical-cross-site-scripting-xss-vulnerability-in-grav","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-46199-critical-cross-site-scripting-xss-vulnerability-in-grav\/","title":{"rendered":"<strong>CVE-2025-46199: Critical Cross-Site Scripting (XSS) Vulnerability in Grav<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The CVE-2025-46199 is a severe vulnerability that has been identified in Grav, a popular open-source modern Content Management System (CMS). This vulnerability is a type of Cross-Site Scripting (XSS) attack, which allows an attacker to inject and execute arbitrary code via crafted scripts in the form fields of the CMS. Given the widespread use of Grav for building and managing websites, this vulnerability, if left unpatched, can affect a large number of users and organizations, potentially <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7793-critical-vulnerability-in-tenda-fh451-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"68526\">leading to system<\/a> compromise and data leakage.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-46199<br \/>\nSeverity: Critical (9.8 CVSS Score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<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=\"69226\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-998776665\" 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>Grav | v.1.7.48 and before<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>An attacker can exploit this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53084-critical-cross-site-scripting-vulnerability-in-wwbn-avideo-14-4\/\"  data-wpil-monitor-id=\"68038\">vulnerability by injecting malicious scripts<\/a> into the form fields of Grav. These scripts can then be executed in the browser of a user viewing the form, potentially <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41668-critical-file-replacement-leading-to-unauthorized-access\/\"  data-wpil-monitor-id=\"66327\">leading to unauthorized<\/a> access, system compromise, or data leakage. The attacker does not require any special <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7695-privilege-escalation-vulnerability-in-dataverse-integration-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"69225\">privileges to exploit this vulnerability<\/a>, and the attack can be carried out over the network.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2617542499\" 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 is a conceptual example of a crafted <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=\"68039\">HTTP POST request that could potentially exploit this vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/grav\/form HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nform_field=&lt;img src=&#039;x&#039; onerror=&#039;alert(document.cookie)&#039;&gt;<\/code><\/pre>\n<p>In this example, the attacker attempts to inject a script (&#8220;`<img src='x' onerror='alert(document.cookie)'>`&#8221;) into the form field. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52478-stored-cross-site-scripting-vulnerability-in-n8n-s-form-trigger-node\/\"  data-wpil-monitor-id=\"79420\">script is designed to trigger<\/a> an error, causing the &#8216;onerror&#8217; event handler to execute and display an alert with the user&#8217;s cookies. This is a simple example, but in a real attack scenario, the script could contain commands to steal sensitive information or even gain <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41659-codesys-control-runtime-system-pki-folder-vulnerability\/\"  data-wpil-monitor-id=\"73937\">control over the system<\/a>.<\/p>\n<p><strong>How to Mitigate<\/strong><\/p>\n<p>Users are strongly advised to apply the vendor-provided patch to fix this vulnerability. If a patch is not yet available or cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. These tools can help detect and block <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-26210-deepseek-xss-vulnerability-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"86629\">potential XSS<\/a> attacks. However, they should not be seen as a long-term solution, as they may not be able to block all possible attack vectors.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The CVE-2025-46199 is a severe vulnerability that has been identified in Grav, a popular open-source modern Content Management System (CMS). This vulnerability is a type of Cross-Site Scripting (XSS) attack, which allows an attacker to inject and execute arbitrary code via crafted scripts in the form fields of the CMS. Given the widespread use [&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":[81],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59799","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-xss"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59799","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=59799"}],"version-history":[{"count":7,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59799\/revisions"}],"predecessor-version":[{"id":79469,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59799\/revisions\/79469"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=59799"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=59799"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=59799"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=59799"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=59799"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=59799"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=59799"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=59799"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=59799"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}