CVE-2017-5386

WebExtension scripts can use the "data:" protocol to affect pages loaded by other web extensions using this protocol, leading to potential data disclosure or privilege escalation in affected extensions. This vulnerability affects Firefox ESR < 45.7 and Firefox < 51.

• http://rhn.redhat.com/errata/RHSA-2017-0190.htmlThird Party Advisory
• http://www.securityfocus.com/bid/95769Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1037693Third Party Advisory, VDB Entry
• https://bugzilla.mozilla.org/show_bug.cgi?id=1319070Exploit, Issue Tracking, Patch, Vendor Advisory
• https://security.gentoo.org/glsa/201702-22Third Party Advisory
• https://www.debian.org/security/2017/dsa-3771Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2017-01/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2017-02/Vendor Advisory
• http://rhn.redhat.com/errata/RHSA-2017-0190.htmlThird Party Advisory
• http://www.securityfocus.com/bid/95769Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1037693Third Party Advisory, VDB Entry
• https://bugzilla.mozilla.org/show_bug.cgi?id=1319070Exploit, Issue Tracking, Patch, Vendor Advisory
• https://security.gentoo.org/glsa/201702-22Third Party Advisory
• https://www.debian.org/security/2017/dsa-3771Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2017-01/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2017-02/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.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2017-5380A potential use-after-free found through fuzzing during DOM …
• CVE-2017-5381The "export" function in the Certificate Viewer can force lo…
• CVE-2017-5382Feed preview for RSS feeds can be used to capture errors and…
• CVE-2017-5383URLs containing certain unicode glyphs for alternative hyphe…
• CVE-2017-5384Proxy Auto-Config (PAC) files can specify a JavaScript funct…
• CVE-2017-5385Data sent with in multipart channels, such as the multipart/…
• CVE-2017-5387The existence of a specifically requested local file can be …
• CVE-2017-5388A STUN server in conjunction with a large number of "webkitR…
• CVE-2017-5389WebExtensions could use the "mozAddonManager" API by modifyi…
• CVE-2017-5390The JSON viewer in the Developer Tools uses insecure methods…
• CVE-2017-5391Special "about:" pages used by web content, such as RSS feed…
• CVE-2017-5392Weak proxy objects have weak references on multiple threads …