CVE-2026-61915

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{"bugzilla": {"description": "cyrus-imapd: cyrus-imapd: VPATCH BYPARAM double-free in CalDAV", "id": "2526315", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526315"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.2", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L", "status": "draft"}, "cwe": "CWE-415", "details": ["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."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-61915", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "cyrus-imapd", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "cyrus-imapd", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "cyrus-imapd", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "cyrus-imapd", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "cyrus-imapd", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-09-10T07:44:04Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-61915\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-61915"], "threat_severity": "Moderate"}

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