Vulnerability record · CVE-2017-5387 · published 11 June 2018

CVE-2017-5387: Mozilla firefox vulnerability

Mozilla · Firefox

The existence of a specifically requested local file can be found due to the double firing of the "onerror" when the "source" attribute on a "<track>" tag refers to a file that does not exist if the source page is loaded locally. This vulnerability affects Firefox < 51.

3.3 CVSS 3.0 Low EPSS 0.40% · top 68.1% CWE-538 · CWE-538

3.3CVSS 3.0 base score, v2 2.1

0.40%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

8References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Firefox Mozilla

References

Link	Tags
http://www.securityfocus.com/bid/95763	Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1037693	Third Party AdvisoryVDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1295023	ExploitIssue Tracking
https://www.mozilla.org/security/advisories/mfsa2017-01/	Vendor Advisory
http://www.securityfocus.com/bid/95763	Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1037693	Third Party AdvisoryVDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1295023	ExploitIssue Tracking
https://www.mozilla.org/security/advisories/mfsa2017-01/	Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-5387), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.