CVE-2026-61915

Summary

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 the selector would be freed once on each iteration over the properties.

Affected Software

VendorProductVersion RangeStatus
cyrusimapCyrus IMAP0 < 3.8.8affected
cyrusimapCyrus IMAP3.9.0 < 3.10.4affected
cyrusimapCyrus IMAP3.11.0 < 3.12.4affected

Weaknesses

  • CWE-415: CWE-415 Double Free

References