CVE-2016-2817 in Firefox

Summary

The WebExtension sandbox feature in browser/components/extensions/ext-tabs.js in Mozilla Firefox before 46.0 does not properly restrict principal inheritance during chrome.tabs.create and chrome.tabs.update API calls, which allows remote attackers to conduct Universal XSS (UXSS) attacks via a crafted extension that accesses a (1) javascript: or (2) data: URL.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

• Reservation: 03/01/2016
• Disclosure: 04/30/2016
• Moderation: VulDB entry created
• Entries: 1: VDB-82977
• CPE: ready
• CWE: CWE-264 (Confirmed)
• CVSS: 7.1
• EPSS: 0.00399
• Activities: Very Low

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2016-2817
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-2817
• CVE Details: https://www.cvedetails.com/cve/CVE-2016-2817/