CVE-2017-5458

Severity: medium (CVSS 6.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-06-11 · updated 2026-06-17
Weakness: CWE-79

Description

When a "javascript:" URL is drag and dropped by a user into the addressbar, the URL will be processed and executed. This allows for users to be socially engineered to execute an XSS attack on themselves. This vulnerability affects Firefox < 53.

Affected products

Mozilla Firefox: before 53.0 — fixed in 53.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 53.0. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/97940
http://www.securitytracker.com/id/1038320
https://bugzilla.mozilla.org/show_bug.cgi?id=1229426
https://www.mozilla.org/security/advisories/mfsa2017-10/
http://www.securityfocus.com/bid/97940
http://www.securitytracker.com/id/1038320
https://bugzilla.mozilla.org/show_bug.cgi?id=1229426
https://www.mozilla.org/security/advisories/mfsa2017-10/

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