Fiche vulnérabilité
CVE-2026-40020 : faille moyenne dovecot dovecot (CVSS 4.3)
Description
Attacker can use the IMAP SETACL command to inject the anyone permission to user's dovecot-acl file even if imap_acl_allow_anyone=no. This causes folders to be spammed to all users. The impact is limited to being able to spam folders to other users, no unexpected access is gained. Install to fixed version. No publicly available exploits are known.
En bref
- Sévérité
- Moyenne (CVSS 4.3)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- Exploitation active
- Non signalée par la CISA
- Publication
- 12 mai 2026
- Dernière mise à jour
- 17 juin 2026
Produits concernés
- dovecot dovecot
- open-xchange dovecot