PT-2026-40028

CVE-2026-40020

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Published

2026-05-12

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Updated

2026-09-14

Description by

CVSS 3.1
4.3
Medium
MetricsAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Name of the Vulnerable Software and Affected Versions dovecot versions prior to 2.4.4-1.1
Description An attacker can use the IMAP SETACL command to inject the anyone permission into a user's dovecot-acl file, bypassing the imap acl allow anyone=no configuration. This allows folders to be spammed to all users, although no unauthorized access to data is granted.
Recommendations Update to version 2.4.4-1.1.
Exploitability
Exploit
Fix
Impacts
Vendors
Affected products
Weakness enumeration
CWE-284: Improper Access Control
Related identifiers
CVE-2026-40020
BDU:2026-10411
AZL-86808
CLSA-2026-1780910915
CLSA-2026-1781096989
OESA-2026-2722
OPENSUSE-SU-2026:10766-1
OPENSUSE-SU-2026:21109-1
SUSE-SU-2026:22185-1
SUSE-SU-2026:2645-1
SUSE-SU-2026:4139-1
USN-8365-1
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