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CVE-2026-40020

Dovecot

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.

CVSS 3.1EPSS 0.271%Risk 0.32
View source
Published
2026-05-12 14:17:03
Affected versions
unknown
Type
Core software
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L