CVE-2026-33869

MEDIUM

4.8

Description

Mastodon is a free, open-source social network server based on ActivityPub. In versions on the 4.5.x branch prior to 4.5.8 and on the 4.4.x branch prior to 4.4.15, an attacker that knows of a quote before it has reached a server can prevent it from being correctly processed on that server. The vulnerability has been patched in Mastodon 4.5.8 and 4.4.15. Mastodon 4.3 and earlier are not affected because they do not support quotes.

Details CVE

Score CVSS v3.14.8

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Vecteur d'attaqueNETWORK

ComplexiteHIGH

Privileges requisNONE

Interaction utilisateurNONE

Publie3/27/2026

Derniere modification3/30/2026

Sourcenvd

Observations honeypot0

Produits affectes

joinmastodon:mastodon

Faiblesses (CWE)

CWE-863

References

https://github.com/mastodon/mastodon/security/advisories/GHSA-q4g8-82c5-9h33(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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