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A vulnerability in Mozilla Firefox before version 43.0 and Firefox ESR 38.x before 38.5 allows remote attackers to bypass the Same Origin Policy (SOP) by leveraging improper handling of data: and view-source: URIs. This flaw enables attackers to access or manipulate web content across origins, violating browser security boundaries.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository is a Proof-of-Concept (PoC) exploit for CVE-2015-7214, a Same-Origin Policy (SOP) bypass vulnerability in Mozilla Firefox versions 42.0 and earlier. The repository contains two main HTML files: 'local/index.html' demonstrates the ability to read local files by targeting platform-specific file paths, while 'www/index.html' targets a remote web resource. Both files use JavaScript to open a blob URL in a new window, manipulate the window's location using 'data' and 'view-source' URI schemes, and attempt to read and display the contents of the targeted resource. The exploit requires the user to open the HTML file in a vulnerable version of Firefox. The README provides background, usage instructions, and download links for the required Firefox version. No external network communication is performed by the exploit itself, but it does attempt to access local file paths and a specific remote URL for demonstration purposes.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
1 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.