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CVE-2026-40020

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CVSS 3.1
4.3 medium
EPSS
<1%p18
Published
()
Modified
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.

Vendors
dovecotopen-xchange
Products
dovecot
Weakness
CWE-284
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
NVD CVE.org GitHub PoCs EPSS (0.3%)

In the news

No ingested article mentions this CVE yet.