CVE-2017-7812

Severity: medium (CVSS 5.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-06-11 · updated 2026-06-17
Weakness: CWE-200

Description

If web content on a page is dragged onto portions of the browser UI, such as the tab bar, links can be opened that otherwise would not be allowed to open. This can allow malicious web content to open a locally stored file through "file:" URLs. This vulnerability affects Firefox < 56.

Affected products

Mozilla Firefox: through 55.0.3

References

http://www.securityfocus.com/bid/101057
http://www.securitytracker.com/id/1039465
https://bugzilla.mozilla.org/show_bug.cgi?id=1379842
https://www.mozilla.org/security/advisories/mfsa2017-21/
http://www.securityfocus.com/bid/101057
http://www.securitytracker.com/id/1039465
https://bugzilla.mozilla.org/show_bug.cgi?id=1379842
https://www.mozilla.org/security/advisories/mfsa2017-21/

Get alerted when CVE-2017-7812 or the next vulnerability affects your stack