The `ShmemCharMapHashEntry()` code was susceptible to potentially undefined behavior by bypassing the move semantics for one of its data members. This vulnerability affects Firefox < 126.
https://www.mozilla.org/security/advisories/mfsa2024-21/
https://bugzilla.mozilla.org/show_bug.cgi?id=1886598
Source: Mitre, NVD
Published: 2024-05-14
Updated: 2024-05-14
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical