CVE-2019-9148: Mailvelope

Medium severity, CVSS 4.3. EPSS: 1.4% chance of exploitation in the next 30 days.

Mailvelope prior to 3.3.0 accepts or operates with invalid PGP public keys: Mailvelope allows importing keys that contain users without a valid self-certification. Keys that are obviously invalid are not rejected during import. An attacker that is able to get a victim to import a manipulated key could claim to have signed a message that originates from another person.

Affected products

• Mailvelope Mailvelope: before 3.3.0 (fixed in 3.3.0)

Published 2019-07-09. Last modified 2026-06-17.