VulnerabilityModified
CVE-2017-5387
This vulnerability affects Firefox < 51.
LOW 3.3EPSS 0.39%
Does this matter?
Lower severity and a low EPSS score (0.39%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.0
- 3.3 LOWCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 0.39% probability · 33th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-538
- Affected
- mozilla/firefox
- Source
- security@mozilla.org
EPSS 0.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/95763Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037693Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1295023Exploit, Issue Tracking
- https://www.mozilla.org/security/advisories/mfsa2017-01/Vendor Advisory
- http://www.securityfocus.com/bid/95763Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037693Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1295023Exploit, Issue Tracking
- https://www.mozilla.org/security/advisories/mfsa2017-01/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.