CVE-2026-40020
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 us…
Published: 2026-05-12 · CVSS: 3.1 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7