CVE-2026-61915
highAn issue was discovered in Cyrus IMAP before 3.12.4.
Vendor / product: Cyrus — imap
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.
CVSS
7.1
7.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-09-09 20:18
Modified: 2026-09-16 15:23
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 06:52 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
cyrus / imap <3.8.8, ≥3.9.0 <3.10.4, ≥3.11.0 <3.12.4
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://cyrusimap.org cve@mitre.org
- https://www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.html cve@mitre.org
- https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.html cve@mitre.org
- https://www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.html cve@mitre.org
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:52 UTC · record ↗