CVE-2021-29957

If a MIME encoded email contains an OpenPGP inline signed or encrypted message part, but also contains an additional unprotected part, Thunderbird did not indicate that only parts of the message are protected. This vulnerability affects Thunderbird < 78.10.2.

• https://bugzilla.mozilla.org/show_bug.cgi?id=1673241Exploit, Patch, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2021-22/Release Notes, Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1673241Exploit, Patch, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2021-22/Release Notes, Vendor Advisory

Published

Jun 24, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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