We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6.
https://www.mozilla.org/security/advisories/mfsa2026-67/
https://bugzilla.mozilla.org/show_bug.cgi?id=2045443
Source: Mitre, NVD
Published: 2026-07-14
Updated: 2026-07-14
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 4.3
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Severity: Medium