🛡️ CVE-2026-40020
🟢 CVSS 3.1 — Low ✅ No Known Exploit CWE-284 NVD
3.1
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity LOW
CVSS Score 3.1
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE CWE-284
Public Exploit ✅ No
Source NVD
Published 2026-05-12
Updated 2026-06-02
Modified 2026-05-18
Fix URL N/A

Affected Packages

Software From version Fixed in
dovecot 3.1.5
unknown

Exploit Protection

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