HIGH🇵🇱 Wersja polska

CVE-2026-41259

CVSS 8.2v4.0pub. 2026-04-23upd. 2026-04-28

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.

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

  • Joinmastodon Mastodon

    APP
    Joinmastodon
    < 4.3.224.4.0 – 4.4.16 (bez)4.5.0 – 4.5.9 (bez)
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CHECK WITH VENDOR
No clear patch data available. Check vendor references.
CWE
References

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