CVE-2026-61915

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-61915
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-09 20:18:36 UTC
Updated2026-09-10 15:17:35 UTC
DescriptionAn 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.

Risk And Classification

Primary CVSS: v3.1 4.2 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L

EPSS: 0.002170000 probability, percentile 0.121360000 (date 2026-09-11)

Problem Types: CWE-415 | CWE-415 CWE-415 Double Free

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.2MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
3.1CNACVSS4.2MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cyrusimap Cyrus IMAP affected 3.8.8 semver Not specified
CNA Cyrusimap Cyrus IMAP affected 3.9.0 3.10.4 semver Not specified
CNA Cyrusimap Cyrus IMAP affected 3.11.0 3.12.4 semver Not specified

References

ReferenceSourceLinkTags
www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.html [email protected] www.cyrusimap.org
cyrusimap.org [email protected] cyrusimap.org
www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.html [email protected] www.cyrusimap.org
www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.html [email protected] www.cyrusimap.org
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