CVE-2026-61907
Published:September 09, 2026
Updated:September 22, 2026
An issue was discovered in Cyrus IMAP before 3.12.4. JMAP snooze bypasses the destination-mailbox ACL. An authenticated user with insert permissions on another user's snoozed mailbox could cause insertion of mail to that user's inbox, or any other of their mailboxes whose id was known to the user, despite having no insert permissions to the target mailbox.
Affected Packages
https://github.com/cyrusimap/cyrus-imapd.git (GITHUB):
Affected version(s) >=cyrus-imapd-3.11.0-alpha0 <cyrus-imapd-3.12.4Fix Suggestion:
Update to version cyrus-imapd-3.12.4https://github.com/cyrusimap/cyrus-imapd.git (GITHUB):
Affected version(s) >=cyrus-imapd-3.7.0-alpha0 <cyrus-imapd-3.8.8Fix Suggestion:
Update to version cyrus-imapd-3.8.8https://github.com/cyrusimap/cyrus-imapd.git (GITHUB):
Affected version(s) >=cyrus-imapd-3.9.0-alpha0 <cyrus-imapd-3.10.4Fix Suggestion:
Update to version cyrus-imapd-3.10.4Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Incorrect Authorization
EPSS
Base Score:
0.35