CVE-2026-61911Medium· 4.3▾ SunlitAn 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 ma…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 23.7 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 11.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.2%
Last analysed / modified upstream
0.2% → 0.4%
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.
imap < 3.8.8imap >= 3.9.0, < 3.10.4imap >= 3.11.0, < 3.12.4Upgrade past the affected range:
imap 3.12.4Connected by shared product, vendor, weakness, or advisory.
CVE-2026-61915Medium· 4.2An issue was discovered in Cyrus IMAP before 3.12.4
CVE-2026-61909Low· 3.5An issue was discovered in Cyrus IMAP before 3.12.4
CVE-2026-61910Low· 3.5An issue was discovered in Cyrus IMAP before 3.12.4
CVE-2026-61908Low· 3.1An issue was discovered in Cyrus IMAP before 3.12.4
CVE-2026-97181Medium· 5.3GPM LIGHT developed by ezGlobal has a Sensitive Data Exposure vulnerability
CVE-2026-84712Medium· 5.3A flaw was found in the automation-controller API