UBUNTU-CVE-2026-47081

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Source
https://ubuntu.com/security/CVE-2026-47081
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47081.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-47081
Upstream
  • CVE-2026-47081
Published
2026-07-16T19:16:00Z
Modified
2026-10-17T12:55:49Z
Severity
  • 3.1 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an XAPPLEPUSHSERVICE folder existence oracle and push hijack. An authenticated IMAP user could probe for the existence of arbitrary mailboxes on other users' accounts via the XAPPLEPUSHSERVICE command and then create Apple Push Notification Service notifications for new mail in those mailboxes to their own APNS device. This did not leak any data about the content of mailboxes. Instead, a "mailbox has changed" notice would be pushed when the mailbox modseq changed.

References

Affected packages

Ubuntu:26.04:LTS
cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/ubuntu/cyrus-imapd?arch=source&distro=resolute

Affected ranges

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

Affected versions

3.*
3.10.2-1
3.12.1-2
3.12.1-2build1
3.12.1-3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "cyrus-admin",
            "binary_version":  "3.12.1-3"
        },
        {
            "binary_name":  "cyrus-caldav",
            "binary_version":  "3.12.1-3"
        },
        {
            "binary_name":  "cyrus-clients",
            "binary_version":  "3.12.1-3"
        },
        {
            "binary_name":  "cyrus-common",
            "binary_version":  "3.12.1-3"
        },
        {
            "binary_name":  "cyrus-imapd",
            "binary_version":  "3.12.1-3"
        },
        {
            "binary_name":  "cyrus-murder",
            "binary_version":  "3.12.1-3"
        },
        {
            "binary_name":  "cyrus-nntpd",
            "binary_version":  "3.12.1-3"
        },
        {
            "binary_name":  "cyrus-pop3d",
            "binary_version":  "3.12.1-3"
        },
        {
            "binary_name":  "cyrus-replication",
            "binary_version":  "3.12.1-3"
        },
        {
            "binary_name":  "libcyrus-imap-perl",
            "binary_version":  "3.12.1-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47081.json"
Ubuntu:26.10
cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/ubuntu/cyrus-imapd?arch=source&distro=stonking

Affected ranges

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

Affected versions

3.*
3.12.1-3
3.12.2-1
3.12.2-1build1
3.12.3-3build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "cyrus-admin",
            "binary_version":  "3.12.3-3build1"
        },
        {
            "binary_name":  "cyrus-caldav",
            "binary_version":  "3.12.3-3build1"
        },
        {
            "binary_name":  "cyrus-clients",
            "binary_version":  "3.12.3-3build1"
        },
        {
            "binary_name":  "cyrus-common",
            "binary_version":  "3.12.3-3build1"
        },
        {
            "binary_name":  "cyrus-imapd",
            "binary_version":  "3.12.3-3build1"
        },
        {
            "binary_name":  "cyrus-murder",
            "binary_version":  "3.12.3-3build1"
        },
        {
            "binary_name":  "cyrus-nntpd",
            "binary_version":  "3.12.3-3build1"
        },
        {
            "binary_name":  "cyrus-pop3d",
            "binary_version":  "3.12.3-3build1"
        },
        {
            "binary_name":  "cyrus-replication",
            "binary_version":  "3.12.3-3build1"
        },
        {
            "binary_name":  "libcyrus-imap-perl",
            "binary_version":  "3.12.3-3build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47081.json"
Ubuntu:Pro:18.04:LTS
cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/ubuntu/cyrus-imapd?arch=source&distro=esm-apps%2Fbionic

Affected ranges

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

Affected versions

2.*
2.5.10-3build1
2.5.10-3build2
2.5.10-3ubuntu1
2.5.10-3ubuntu1.1
2.5.10-3ubuntu1.1+esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "cyrus-admin",
            "binary_version":  "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name":  "cyrus-caldav",
            "binary_version":  "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name":  "cyrus-clients",
            "binary_version":  "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name":  "cyrus-common",
            "binary_version":  "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name":  "cyrus-imapd",
            "binary_version":  "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name":  "cyrus-murder",
            "binary_version":  "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name":  "cyrus-nntpd",
            "binary_version":  "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name":  "cyrus-pop3d",
            "binary_version":  "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name":  "cyrus-replication",
            "binary_version":  "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name":  "libcyrus-imap-perl",
            "binary_version":  "2.5.10-3ubuntu1.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47081.json"
Ubuntu:Pro:20.04:LTS
cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/ubuntu/cyrus-imapd?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

3.*
3.0.11-1
3.0.11-1build1
3.0.12-1
3.0.12-2
3.0.12-2ubuntu2
3.0.12-2ubuntu3
3.0.13-2ubuntu1
3.0.13-3ubuntu1
3.0.13-4ubuntu1
3.0.13-5
3.0.13-5ubuntu0.1~esm1
3.0.13-5ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "cyrus-admin",
            "binary_version":  "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name":  "cyrus-caldav",
            "binary_version":  "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name":  "cyrus-clients",
            "binary_version":  "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name":  "cyrus-common",
            "binary_version":  "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name":  "cyrus-imapd",
            "binary_version":  "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name":  "cyrus-murder",
            "binary_version":  "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name":  "cyrus-nntpd",
            "binary_version":  "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name":  "cyrus-pop3d",
            "binary_version":  "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name":  "cyrus-replication",
            "binary_version":  "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name":  "libcyrus-imap-perl",
            "binary_version":  "3.0.13-5ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47081.json"
Ubuntu:Pro:22.04:LTS
cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/ubuntu/cyrus-imapd?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

3.*
3.2.6-2build1
3.4.2-2
3.4.2-2build1
3.4.3-2
3.4.3-3
3.4.3-3build2
3.4.3-3ubuntu0.1
3.4.3-3ubuntu0.1+esm1
3.4.3-3ubuntu0.3
3.4.3-3ubuntu0.3+esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "cyrus-admin",
            "binary_version":  "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name":  "cyrus-caldav",
            "binary_version":  "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name":  "cyrus-clients",
            "binary_version":  "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name":  "cyrus-common",
            "binary_version":  "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name":  "cyrus-imapd",
            "binary_version":  "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name":  "cyrus-murder",
            "binary_version":  "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name":  "cyrus-nntpd",
            "binary_version":  "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name":  "cyrus-pop3d",
            "binary_version":  "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name":  "cyrus-replication",
            "binary_version":  "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name":  "libcyrus-imap-perl",
            "binary_version":  "3.4.3-3ubuntu0.3+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47081.json"
Ubuntu:Pro:24.04:LTS
cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/ubuntu/cyrus-imapd?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

3.*
3.8.0-5
3.8.1-1
3.8.1-1build1
3.8.1-1build2
3.8.1-3
3.8.1-3build3
3.8.2-1
3.8.2-1ubuntu0.1~esm1
3.8.2-1ubuntu0.2
3.8.2-1ubuntu0.2+esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "cyrus-admin",
            "binary_version":  "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name":  "cyrus-caldav",
            "binary_version":  "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name":  "cyrus-clients",
            "binary_version":  "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name":  "cyrus-common",
            "binary_version":  "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name":  "cyrus-imapd",
            "binary_version":  "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name":  "cyrus-murder",
            "binary_version":  "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name":  "cyrus-nntpd",
            "binary_version":  "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name":  "cyrus-pop3d",
            "binary_version":  "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name":  "cyrus-replication",
            "binary_version":  "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name":  "libcyrus-imap-perl",
            "binary_version":  "3.8.2-1ubuntu0.2+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47081.json"