CVE-2025-26696

Published: Mar 10, 2025Modified: Apr 13, 2026

7.0

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

Exploitability: 2.2 / Impact: 4.7

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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 was fixed in Thunderbird 136 and Thunderbird 128.8.

Affected (2)

Products: Mozilla: Thunderbird

1 product

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Mozilla Thunderbird	Before 128.8.0
Mozilla Thunderbird	From 129.0 to 136.0

Related CWEs

Authentication Bypass by Spoofing

This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

References (3)

https://bugzilla.mozilla.org/show_bug.cgi?id=1864205

Source: security@mozilla.org

Issue Tracking

https://www.mozilla.org/security/advisories/mfsa2025-17/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-18/

Source: security@mozilla.org

Vendor Advisory

Timeline

No history available yet.