The parent process would not properly check whether the Speech Synthesis feature is enabled, when receiving instructions from a child process. This vulnerability affects Thunderbird < 91.9.
https://www.mozilla.org/security/advisories/mfsa2022-18/
https://bugzilla.mozilla.org/show_bug.cgi?id=1764778
Source: Mitre, NVD
Published: 2022-12-22
Updated: 2023-01-04
Base Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N
Severity: High
Base Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Severity: Medium