CVE-2026-41259 (GCVE-0-2026-41259)
Vulnerability from cvelistv5
Published
2026-04-23 18:55
Modified
2026-04-23 19:24
CWE
  • CWE-841 - Improper Enforcement of Behavioral Workflow
Summary
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.
Impacted products
Vendor Product Version
mastodon mastodon Version: < 4.3.22
Version: >= 4.4.0-beta.1, < 4.4.16
Version: >= 4.5.0-beta.1, < 4.5.9
Create a notification for this product.
Show details on NVD website


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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