CVE-2022-3155: Mozilla Thunderbird

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

When saving or opening an email attachment on macOS, Thunderbird did not set attribute com.apple.quarantine on the received file. If the received file was an application and the user attempted to open it, then the application was started immediately without asking the user to confirm. This vulnerability affects Thunderbird < 102.3.

Affected products

• Mozilla Thunderbird: before 102.3 (fixed in 102.3)

Published 2022-12-22. Last modified 2026-06-17.