CVE-2016-1954
8.8
HIGH
CVSS 3.1
EPSS 2.7%
Description
The nsCSPContext::SendReports function in dom/security/nsCSPContext.cpp in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7 does not prevent use of a non-HTTP report-uri for a Content Security Policy (CSP) violation report, which allows remote attackers to cause a denial of service (data overwrite) or possibly gain privileges by specifying a URL of a local file.
How to fix CVE-2016-1954
To remediate CVE-2016-1954, upgrade the affected package to a fixed version below.
- —upgrade to 45.0esr-1 or later
Is CVE-2016-1954 being exploited?
Low — EPSS is 2.7%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 45.0esr-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |