Vulnerability in Mozilla Firefox

CVE-2019-11723

A vulnerability exists during the installation of add-ons where the initial fetch ignored the origin attributes of the browsing context. This could leak cookies in private browsing mode or across different "containers" for people who use the Firefox Multi-Account Containers Web Extension. This vulnerability affects Firefox < 68.

EPSS: 0.008 (53.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2019-11723?
CVE-2019-11723 is a high-severity vulnerability in Mozilla Firefox, classified under Origin Validation Error. CVSS score: 7.5/10. Published 2019-07-23.
How severe is CVE-2019-11723?
High severity. CVSS v3 base score is 7.5 out of 10.