Vulnerability record · CVE-2017-5415 · published 11 June 2018

CVE-2017-5415: Mozilla firefox improper input validation vulnerability

Mozilla · Firefox

An attack can use a blob URL and script to spoof an arbitrary addressbar URL prefaced by "blob:" as the protocol, leading to user confusion and further spoofing attacks. This vulnerability affects Firefox < 52.

5.3 CVSS 3.0 Medium EPSS 13% · top 3.9% CWE-20 · Improper input validation

5.3CVSS 3.0 base score, v2 5.0

13%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:N/AC:L/PR:N/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/96692	Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1037966	Third Party AdvisoryVDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1321719	ExploitIssue TrackingPatch
https://www.mozilla.org/security/advisories/mfsa2017-05/	Vendor Advisory
http://www.securityfocus.com/bid/96692	Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1037966	Third Party AdvisoryVDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1321719	ExploitIssue TrackingPatch
https://www.mozilla.org/security/advisories/mfsa2017-05/	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-2017-5415), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.