CVE-2026-41259
Mastodon: Insufficient verification of email addresses
Summary
Mastodon: Insufficient verification of email addresses
Original description
The description as published by the source.
Mastodon is a free, open-source social network server based on ActivityPub. Prior to v4.5.9, v4.4.16, and v4.3.22, Mastodon allows restricting new user sign-up based on e-mail domain names, and performs basic validation on e-mail addresses, but fails to restrict characters that are interpreted differently by some mailing servers. This vulnerability is fixed in v4.5.9, v4.4.16, and v4.3.22.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Affected packages
Bitnami
mastodon
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"4.3.22"},{"introduced":"4.4.0"},{"fixed":"4.4.16"},{"introduced":"4.5.0"},{"fixed":"4.5.9"}]}]
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com