DEBIAN-CVE-2026-61911

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Source
https://security-tracker.debian.org/tracker/CVE-2026-61911
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-61911.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-61911
Upstream
Published
2026-09-09T20:18:36Z
Modified
2026-09-17T08:47:32Z
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. There is a Sieve mailbox existence oracle. An authenticated user could install a Sieve script that probed whether another user's private mailbox existed, or read the value of shared mailbox annotations, by observing which fileinto branch fired during LMTP delivery.

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-2026-61911.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-2026-61911.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-2026-61911.json"