CVE-2019-8338: Gpg-Pgp Project Gpg-Pgp

Medium severity, CVSS 5.9. EPSS: 1.7% chance of exploitation in the next 30 days.

The signature verification routine in the Airmail GPG-PGP Plugin, versions 1.0 (9) and earlier, does not verify the status of the signature at all, which allows remote attackers to spoof arbitrary email signatures by crafting a signed email with an invalid signature. Also, it does not verify the validity of the signing key, which allows remote attackers to spoof arbitrary email signatures by crafting a key with a fake user ID (email address) and injecting it into the user's keyring.

Affected products

• Gpg-Pgp Project Gpg-Pgp: up to and including 1.0\(9\)

Published 2019-05-16. Last modified 2026-06-17.