CVE-2022-3155

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-12-22 · updated 2026-06-17
Weakness: CWE-276

Description

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

How to fix

Upgrade to a fixed version: Mozilla Thunderbird 102.3. Check the vendor advisory for mitigations.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1789061
https://www.mozilla.org/security/advisories/mfsa2022-42/
https://bugzilla.mozilla.org/show_bug.cgi?id=1789061
https://www.mozilla.org/security/advisories/mfsa2022-42/
https://bugzilla.mozilla.org/show_bug.cgi?id=1789061

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