CVE-2018-5116

WebExtensions with the "ActiveTab" permission are able to access frames hosted within the active tab even if the frames are cross-origin. Malicious extensions can inject frames from arbitrary origins into the loaded page and then interact with them, bypassing same-origin user expectations with this permission. This vulnerability affects Firefox < 58.

• CWE-346

• http://www.securityfocus.com/bid/102786Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1040270Third Party Advisory, VDB Entry
• https://bugzilla.mozilla.org/show_bug.cgi?id=1396399Issue Tracking, Permissions Required
• https://usn.ubuntu.com/3544-1/Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2018-02/Vendor Advisory
• http://www.securityfocus.com/bid/102786Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1040270Third Party Advisory, VDB Entry
• https://bugzilla.mozilla.org/show_bug.cgi?id=1396399Issue Tracking, Permissions Required
• https://usn.ubuntu.com/3544-1/Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2018-02/Vendor Advisory

Published

Jun 11, 2018

Last Modified

Jun 17, 2026

Status

Modified

• Same Subject, Wrong User: A Cross-Issuer Account Takeover in n8nStrix found an identity-binding bug in n8n's token-exchange flow enabling account takeover.
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