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. External Reference: https://www.mozilla.org/en-US/security/advisories/mfsa2019-21/#CVE-2019-11723
Acknowledgments: Name: the Mozilla project Upstream: Andreas Wagner
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2019-11723