CVE-2018-5140

Name: CVE-2018-5140
Creator: NVD / NIST
Published: 2018-06-11T21:29:14.517+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.32%

Last modified Jun 17, 2026

CVE-2018-5140 is a vulnerability of currently unknown severity. Image for moz-icons can be accessed through the "moz-icon:" protocol through script in web content even when otherwise prohibited. This could allow for information leakage of which applications are associated with specific MIME types by a malicious page. EPSS estimates a 1.32% chance of exploitation in the next 30 days.

Description

Image for moz-icons can be accessed through the "moz-icon:" protocol through script in web content even when otherwise prohibited. This could allow for information leakage of which applications are associated with specific MIME types by a malicious page. This vulnerability affects Firefox < 59.

Metrics

EPSS Probability

1.32%

67.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 59.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	17.10

References

http://www.securityfocus.com/bid/103386Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040514Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1424261Permissions Required
https://usn.ubuntu.com/3596-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-06/Vendor Advisory
http://www.securityfocus.com/bid/103386Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040514Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1424261Permissions Required
https://usn.ubuntu.com/3596-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-06/Vendor Advisory

Timeline

Published: Jun 11, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-5140?

How severe is CVE-2018-5140?

Severity scoring for CVE-2018-5140 is pending analysis. The EPSS model estimates a 1.32% probability of exploitation in the next 30 days.

How do I fix CVE-2018-5140?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-5140?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST