CVE-2026-61907

A flaw was found in cyrus-imapd. An authenticated user with insert permissions on another user's snoozed mailbox could bypass access controls. This allows the user to insert mail into the target user's inbox or other known mailboxes, even without explicit insert permissions for those mailboxes. This vulnerability leads to unauthorized modification of another user's mail data.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.