CVE-2022-0432: Joinmastodon Mastodon

Medium severity, CVSS 6.1. EPSS: 4.4% chance of exploitation in the next 30 days.

Prototype Pollution in GitHub repository mastodon/mastodon prior to 3.5.0.

Affected products

• Joinmastodon Mastodon: before 3.5.0 (fixed in 3.5.0)

Published 2022-02-02. Last modified 2026-06-17.