CVE-2019-11723

Mozilla: Cookie leakage during add-on fetching across private browsing boundaries

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Severity

Low

Red Hat Product Security

7.5

CVSS 3.0

Review impact separately from score.

Published · July 9, 2019

Updated · November 22, 2025

Description

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.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CWE-212 · Improper Removal of Sensitive Information Before Storage or Transfer