{"id":71656,"date":"2025-09-05T20:57:07","date_gmt":"2025-09-05T20:57:07","guid":{"rendered":""},"modified":"2025-09-12T02:14:59","modified_gmt":"2025-09-12T08:14:59","slug":"cve-2025-9180-critical-same-origin-policy-bypass-vulnerability-in-firefox-and-thunderbird","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-9180-critical-same-origin-policy-bypass-vulnerability-in-firefox-and-thunderbird\/","title":{"rendered":"<strong>CVE-2025-9180: Critical Same-Origin Policy Bypass Vulnerability in Firefox and Thunderbird<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The CVE-2025-9180 is a high-risk vulnerability scored at 8.1 on the CVSS scale, which is found in the Graphics: Canvas2D component of Mozilla Firefox and Thunderbird. It enables an attacker to bypass the same-origin policy, a critical security component that restricts how a document or script loaded from one origin can interact with a resource from another origin. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55731-sql-injection-vulnerability-in-frappe-framework-leading-to-potential-data-leakage\/\"  data-wpil-monitor-id=\"79262\">vulnerability can lead to potential system compromise or data<\/a> leakage, posing a significant threat to user data and system integrity.<br \/>\nIt&#8217;s not just a concern for individual users, but also for organizations that rely on these popular web browsers and email clients for their daily operations. Understanding the implications of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53819-nix-package-manager-security-vulnerability-in-macos\/\"  data-wpil-monitor-id=\"80891\">vulnerability and applying appropriate mitigations is crucial to maintain secure<\/a> online environments.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-9180<br \/>\nSeverity: High (CVSS: 8.1)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-42957-critical-backdoor-vulnerability-in-sap-s-4hana-exposes-systems-to-potential-compromise\/\"  data-wpil-monitor-id=\"79587\">Potential System<\/a> Compromise and Data Leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2279035605\" 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>Firefox | < 142\nFirefox ESR | < 115.27, < 128.14, < 140.2\nThunderbird | < 142, < 128.14, < 140.2\n\n<strong>How the Exploit Works<\/strong><\/p>\n<p>This exploit takes advantage of a flaw in the Graphics: Canvas2D component that fails to properly enforce the same-origin policy. The same-origin policy is a crucial security concept that prevents scripts on one <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8284-unauthenticated-access-and-control-in-packet-power-monitoring-and-control-web-interface\/\"  data-wpil-monitor-id=\"81649\">web page from accessing<\/a> data on another web page unless both pages have the same origin.<br \/>\nHowever, with CVE-2025-9180, an attacker can craft a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7390-malicious-client-bypass-of-opc-https-server-certificate-trust-check\/\"  data-wpil-monitor-id=\"81860\">malicious script that bypasses<\/a> this policy and accesses data from different origins. This could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31279-critical-permission-issue-allowing-user-fingerprinting-in-macos-and-ipados\/\"  data-wpil-monitor-id=\"81901\">allow an attacker to steal sensitive user<\/a> data from other web pages or even perform actions on behalf of the user without their knowledge or consent.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p>\n<p>Below is a conceptual example of how this vulnerability might be exploited. An attacker might craft a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8714-critical-postgresql-vulnerability-allowing-malicious-code-injection-by-superusers\/\"  data-wpil-monitor-id=\"80645\">malicious JavaScript code<\/a> that targets the Canvas2D component to bypass the same-origin policy.<\/p><div id=\"ameeb-2065515116\" 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<pre><code class=\"\" data-line=\"\">var canvas = document.createElement(&#039;canvas&#039;);\nvar ctx = canvas.getContext(&#039;2d&#039;);\nvar img = new Image();\nimg.crossOrigin = &#039;Anonymous&#039;;\nimg.onload = function() {\nctx.drawImage(img, 0, 0);\nvar data = ctx.getImageData(0, 0, img.width, img.height);\n\/\/ send data to attacker&#039;s server\n}\nimg.src = &#039;http:\/\/target-site.com\/private-image.jpg&#039;;\ndocument.body.appendChild(canvas);<\/code><\/pre>\n<p>In this example, the attacker creates an image element and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43184-macos-shortcut-settings-bypass-vulnerability\/\"  data-wpil-monitor-id=\"81717\">sets its `crossOrigin` attribute to `&#8217;Anonymous&#8217;` to bypass<\/a> the same-origin policy. They then draw the image onto a canvas and extract its data, which could include <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30105-sensitive-information-leak-in-dell-xtremio\/\"  data-wpil-monitor-id=\"80903\">sensitive information<\/a> that they can send to their own server. This code could be delivered to a victim&#8217;s browser through a range of methods, such as <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=\"79423\">cross-site scripting<\/a> (XSS) attacks or malicious advertisements.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The CVE-2025-9180 is a high-risk vulnerability scored at 8.1 on the CVSS scale, which is found in the Graphics: Canvas2D component of Mozilla Firefox and Thunderbird. It enables an attacker to bypass the same-origin policy, a critical security component that restricts how a document or script loaded from one origin can interact with a [&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-71656","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\/71656","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=71656"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/71656\/revisions"}],"predecessor-version":[{"id":74362,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/71656\/revisions\/74362"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=71656"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=71656"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=71656"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=71656"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=71656"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=71656"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=71656"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=71656"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=71656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}