PT-2026-89141 · Cyrusimap · Cyrus Imap
CVE-2026-61911
·
Published
2026-09-09
·
Updated
2026-09-09
CVSS v3.1
4.3
Medium
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
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.
Fix
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Weakness Enumeration
Related Identifiers
Affected Products
Cyrus Imap