{"id":"CVE-2026-61915","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-61915","summary":null,"details":"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.","published":"2026-09-09T00:00:00Z","modified":"2026-10-21T02:58:53.075067413Z","cvss":{"score":4.2,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L"},"epss":{"score":0.00258,"percentile":0.17739,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://cyrusimap.org"},{"type":"WEB","url":"https://www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.html"},{"type":"WEB","url":"https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.html"},{"type":"WEB","url":"https://www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61915.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-61915"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:58:53.075067413Z"}}