CVE-2026-92239

Summary

A maliciously constructed IMAP line could cause an out-of-bounds buffer read. This vulnerability was fixed in Thunderbird 156 and Thunderbird 140.16.

Affected Software

VendorProductVersion RangeStatus
MozillaThunderbird140.16 <= 140.*unaffected
MozillaThunderbird156 <= *unaffected

Weaknesses

References