CVE-2026-61915

Cyrus IMAP before 3.12.4 contains a VPATCH BYPARAM double-free vulnerability. An authenticated calendar user can crash a Cyrus CalDAV worker by sending a PATCH request with PATCH-ACTION="BYPARAM@..." against a resource that has two or more properties of the matched kind. The root cause is that th...

EUVD-2026-75168

An issue was discovered in Cyrus IMAP before 3.12.4. There is a VPATCH BYPARAM double-free. An authenticated calendar user could crash a Cyrus CalDAV worker with a PATCH containing PATCH-ACTION="BYPARAM@..." against a resource with two or more properties of the matched kind. The memory holding th...