CVE-2026-61915

EUVD-2026-75168
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
mitreCNA
4.2 MEDIUM
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 16.64%
Affected Products (NVD)
VendorProductVersion
cyrusimap
𝑥
< 3.8.8
cyrusimap
3.9.0 ≤
𝑥
< 3.10.4
cyrusimap
3.11.0 ≤
𝑥
< 3.12.4
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
cyrusimapcyrus_imap
𝑥
< 3.8.8
CNA
cyrusimapcyrus_imap
3.9.0 ≤
𝑥
< 3.10.4
CNA
cyrusimapcyrus_imap
3.11.0 ≤
𝑥
< 3.12.4
CNA
Debian logo
Debian Releases
Debian Product
Codename
cyrus-imapd
bookworm
vulnerable
bookworm (security)
vulnerable
forky
3.12.4-1
fixed
sid
3.12.4-1
fixed
trixie
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
cyrus-imapd
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
Common Weakness Enumeration
References
https://cyrusimap.org
https://www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.html
https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.html
https://www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.html