Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2026-61915 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.1 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

CNA: [email protected]CVSS-B:4.2 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://cyrusimap.org	[email protected]	Product
https://www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.html	[email protected]	Release Notes
https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.html	[email protected]	Release Notes
https://www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.html	[email protected]	Release Notes

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-415	Double Free	[email protected]

Affected Products

Product	Versions
cyrus imap	< 3.8.8 >= 3.9.0, < 3.10.4 >= 3.11.0, < 3.12.4
CPE cpe:2.3:a:cyrus:imap:::::::: Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Sep 16, 2026	Initial Analysis	[email protected]
Sep 10, 2026	CVE Modified	CISA-ADP
Sep 9, 2026	New CVE Received	[email protected]