CVE-2025-26696 Information

Description

Certain crafted MIME email messages that claimed to contain an encrypted OpenPGP message which instead contained an OpenPGP signed message were wrongly shown as being encrypted. This vulnerability affects Thunderbird < 136 and Thunderbird < 128.8.

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1864205 https://www.mozilla.org/security/advisories/mfsa2025-17/ https://www.mozilla.org/security/advisories/mfsa2025-18/