CVE-2026-4722

Description

Privilege escalation in the IPC component. This vulnerability affects Firefox < 149 and Thunderbird < 149.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2010097
• https://www.mozilla.org/security/advisories/mfsa2026-20/
• https://www.mozilla.org/security/advisories/mfsa2026-23/