Vulnerability in Mozilla Firefox

CVE-2018-12403

If a site is loaded over a HTTPS connection but loads a favicon resource over HTTP, the mixed content warning is not displayed to users. This vulnerability affects Firefox < 63.

EPSS: 0.019 (77.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

References

Frequently asked questions

What is CVE-2018-12403?
CVE-2018-12403 is a medium-severity vulnerability in Mozilla Firefox. CVSS score: 5.3/10. Published 2019-02-28.
How severe is CVE-2018-12403?
Medium severity. CVSS v3 base score is 5.3 out of 10.