DEBIAN-CVE-2026-61909

See a problem?
Please try reporting it to the source first.
Source
https://security-tracker.debian.org/tracker/CVE-2026-61909
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-61909.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-61909
Upstream
Published
2026-09-09T20:18:36Z
Modified
2026-09-17T09:00:11Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
[none]
Details

An issue was discovered in Cyrus IMAP before 3.12.4. CalDAV/CardDAV multiget bypasses a per-href ACL. An authenticated DAV user with some shared access to another user's calendar or address book could read even unshared events or contacts by including the target hrefs in a calendar-multiget or addressbook-multiget REPORT.

References

Affected packages

Debian:12 / cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/debian/cyrus-imapd?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.6.1-4
3.6.1-4+deb12u1
3.6.1-4+deb12u2
3.6.1-4+deb12u3
3.6.1-4+deb12u4
3.6.1-4+deb12u5
3.8.0~beta1-1
3.8.0~beta2-1
3.8.0~rc1-1
3.8.0-1
3.8.0-2
3.8.0-3
3.8.0-4
3.8.0-5
3.8.1-1~bpo12+1
3.8.1-1
3.8.1-2
3.8.1-3
3.8.2-1
3.8.3-1
3.8.4-1
3.10.0~beta1-1
3.10.0~beta1-2
3.10.0~beta1-3
3.10.0~beta2-1
3.10.0~rc2-1
3.10.0-1
3.10.1-1
3.10.1-2
3.10.1-3~bpo12+1
3.10.1-3
3.10.2-1~bpo12+1
3.10.2-1
3.12.0-1
3.12.0-2
3.12.1-1
3.12.1-2
3.12.1-3
3.12.2-1
3.12.3-1~bpo13+1
3.12.3-1
3.12.3-2
3.12.3-3
3.12.3-4
3.12.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-61909.json"

Debian:13 / cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/debian/cyrus-imapd?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.10.2-1
3.10.2-1+deb13u1
3.10.2-1+deb13u2
3.12.0-1
3.12.0-2
3.12.1-1
3.12.1-2
3.12.1-3
3.12.2-1
3.12.3-1~bpo13+1
3.12.3-1
3.12.3-2
3.12.3-3
3.12.3-4
3.12.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-61909.json"

Debian:14 / cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/debian/cyrus-imapd?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.12.4-1

Affected versions

3.*
3.10.2-1
3.12.0-1
3.12.0-2
3.12.1-1
3.12.1-2
3.12.1-3
3.12.2-1
3.12.3-1~bpo13+1
3.12.3-1
3.12.3-2
3.12.3-3
3.12.3-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-61909.json"