Vulnerability in Mozilla Firefox

CVE-2018-12398

By using the reflected URL in some special resource URIs, such as chrome:, it is possible to inject stylesheets and bypass Content Security Policy (CSP). This vulnerability affects Firefox < 63.

EPSS: 0.016 (73.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

Affected products

References

Frequently asked questions

What is CVE-2018-12398?
CVE-2018-12398 is a medium-severity vulnerability in Mozilla Firefox. CVSS score: 6.5/10. Published 2019-02-28.
How severe is CVE-2018-12398?
Medium severity. CVSS v3 base score is 6.5 out of 10.