CVE-2017-7821

A vulnerability where WebExtensions can download and attempt to open a file of some non-executable file types. This can be triggered without specific user interaction for the file download and open actions. This could be used to trigger known vulnerabilities in the programs that handle those document types. This vulnerability affects Firefox < 56.

• CWE-732

• http://www.securityfocus.com/bid/101057Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039465Third Party Advisory, VDB Entry
• https://bugzilla.mozilla.org/show_bug.cgi?id=1346515Exploit, Issue Tracking
• https://www.mozilla.org/security/advisories/mfsa2017-21/Vendor Advisory
• http://www.securityfocus.com/bid/101057Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039465Third Party Advisory, VDB Entry
• https://bugzilla.mozilla.org/show_bug.cgi?id=1346515Exploit, Issue Tracking
• https://www.mozilla.org/security/advisories/mfsa2017-21/Vendor Advisory

Published

Jun 11, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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