CVE-2025-26696 – Thunderbird OpenPGP Encryption Spoofing Vulnerability

The following table lists the changes that have been made to the
CVE-2025-26696 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Mar. 10, 2025

    Action Type Old Value New Value
    Added 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.
    Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=1864205
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-17/
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-18/
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