CVE-2018-5182

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-06-11 · updated 2026-06-17
Weakness: CWE-200

Description

If a text string that happens to be a filename in the operating system's native format is dragged and dropped onto the addressbar the specified local file will be opened. This is contrary to policy and is what would happen if the string were the equivalent "file:" URL. This vulnerability affects Firefox < 60.

Affected products

Canonical Ubuntu Linux: 14.04, 16.04, 17.10, 18.04
Mozilla Firefox: before 60.0 — fixed in 60.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 60.0. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/104139
http://www.securitytracker.com/id/1040896
https://bugzilla.mozilla.org/show_bug.cgi?id=1435908
https://usn.ubuntu.com/3645-1/
https://www.mozilla.org/security/advisories/mfsa2018-11/
http://www.securityfocus.com/bid/104139
http://www.securitytracker.com/id/1040896
https://bugzilla.mozilla.org/show_bug.cgi?id=1435908
https://usn.ubuntu.com/3645-1/
https://www.mozilla.org/security/advisories/mfsa2018-11/

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