Vulnerability in Mozilla Firefox

CVE-2016-2820

The Firefox Health Reports (aka FHR or about:healthreport) feature in Mozilla Firefox before 46.0 does not properly restrict the origin of events, which makes it easier for remote attackers to modify sharing preferences by leveraging access to the remote-report IFRAME element.

EPSS: 0.014 (69.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2016-2820?
CVE-2016-2820 is a medium-severity vulnerability in Mozilla Firefox, classified under Improper Access Control. CVSS score: 4.3/10. Published 2016-04-30.
How severe is CVE-2016-2820?
Medium severity. CVSS v3 base score is 4.3 out of 10.