CVE
CVE-2026-0882
firefox: thunderbird: Use-after-free in the IPC component (important)
DOCUMENTATION: The CVE program describes this issue as: Use-after-free in the IPC component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
STATEMENT: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package Versions Affected
Package Version
patch Availability
No items found.
Automatically patch vulnerabilities without upgrading
Fix Without Upgrading
Detect compatible fix
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CVSS Version
Severity
Base Score
CVSS Version
Score Vector

C
H
U
8.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

C
H
U
-

C
H
U
-
Related Resources
No items found.
References
https://access.redhat.com/security/cve/CVE-2026-0882
