GHSA-v69j-37vj-46wcMediumCVSS 4.3
An issue was discovered in Cyrus IMAP before 3.12.4. There is a Sieve mailbox existence oracle....
🔗 CVE IDs covered (1)
📋 Description
An issue was discovered in Cyrus IMAP before 3.12.4. There is a Sieve mailbox existence oracle. An authenticated user could install a Sieve script that probed whether another user's private mailbox existed, or read the value of shared mailbox annotations, by observing which fileinto branch fired during LMTP delivery.
🔗 References (6)
- https://nvd.nist.gov/vuln/detail/CVE-2026-61911
- https://cyrusimap.org
- https://www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.html
- https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.html
- https://www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.html
- https://github.com/advisories/GHSA-v69j-37vj-46wc