CVE-2026-40020

תיאור (מקור, אנגלית)

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.

מדדים

CVSS 3.1

4.3 (MEDIUM) מקור הציון: NVD CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS — סבירות ניצול

0% (אחוזון 000) נכון ל-29/9/2026

CWE

CWE-284

מוצרים מושפעים

dovecot: dovecot; open-xchange: dovecot

קישורים

• https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/o‮… Vendor Advisory