CVE-2026-61915
CVSS Score
4.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-415 |
| Vendor | cyrusimap |
| Product | cyrus imap |
| Published | Sep 9, 2026 |
| Last Updated | Sep 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
cyrusimap / Cyrus IMAP
0 < 3.8.8 3.9.0 < 3.10.4 3.11.0 < 3.12.4
References
cyrusimap.org: https://cyrusimap.org cyrusimap.org: https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.html cyrusimap.org: https://www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.html cyrusimap.org: https://www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.html