CVE-2026-61915

medium Red Hat
CVSS v3 Base Score
4.2
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Published: September 10, 2026 (1 days ago)
Last Modified: September 10, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in cyrus-imapd. An authenticated calendar user could trigger a double-free vulnerability in the Cyrus CalDAV worker. By sending a specially crafted PATCH request that includes PATCH-ACTION="BYPARAM@..." against a resource with two or more properties of the matched kind, the memory holding the selector would be freed multiple times. This could lead to a denial of service by crashing the CalDAV worker.

CWE

CWE-415

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov