UBUNTU-CVE-2026-47783

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Source
https://ubuntu.com/security/CVE-2026-47783
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47783.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-47783
Upstream
  • CVE-2026-47783
Downstream
Related
Published
2026-05-20T07:16:00Z
Modified
2026-05-27T14:00:06.001224908Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

In memcached before 1.6.42, username data for SASL password database authentication has a timing side channel because a loop exits as soon as a valid username is found by saslserveruserdb_checkpass.

References

Affected packages

Ubuntu:20.04:LTS
memcached

Package

Name
memcached
Purl
pkg:deb/ubuntu/memcached?arch=source&distro=focal

Affected ranges

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

Affected versions

1.*
1.5.10-0ubuntu3
1.5.10-0ubuntu4
1.5.19-2
1.5.20-1
1.5.22-1ubuntu1
1.5.22-2
1.5.22-2ubuntu0.1
1.5.22-2ubuntu0.2
1.5.22-2ubuntu0.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "memcached",
            "binary_version": "1.5.22-2ubuntu0.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47783.json"
Ubuntu:22.04:LTS
memcached

Package

Name
memcached
Purl
pkg:deb/ubuntu/memcached?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.14-1ubuntu0.2

Affected versions

1.*
1.6.9+dfsg-1build1
1.6.12+dfsg-2ubuntu1
1.6.12+dfsg-3
1.6.12+dfsg-4
1.6.13-1
1.6.14-1
1.6.14-1ubuntu0.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "memcached",
            "binary_version": "1.6.14-1ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47783.json"
Ubuntu:24.04:LTS
memcached

Package

Name
memcached
Purl
pkg:deb/ubuntu/memcached?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.24-1ubuntu0.1

Affected versions

1.*
1.6.21-1
1.6.22-1
1.6.23-1
1.6.24-1build1
1.6.24-1build3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "memcached",
            "binary_version": "1.6.24-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47783.json"
Ubuntu:25.10
memcached

Package

Name
memcached
Purl
pkg:deb/ubuntu/memcached?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.38-1ubuntu0.1

Affected versions

1.*
1.6.37-1
1.6.38-1
1.6.38-1build1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "memcached",
            "binary_version": "1.6.38-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47783.json"
Ubuntu:26.04:LTS
memcached

Package

Name
memcached
Purl
pkg:deb/ubuntu/memcached?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.40-1ubuntu0.1

Affected versions

1.*
1.6.38-1build1
1.6.39-2
1.6.40-1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "memcached",
            "binary_version": "1.6.40-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47783.json"
Ubuntu:Pro:16.04:LTS
memcached

Package

Name
memcached
Purl
pkg:deb/ubuntu/memcached?arch=source&distro=esm-infra%2Fxenial

Affected ranges

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

Affected versions

1.*
1.4.24-2ubuntu1
1.4.25-1ubuntu2
1.4.25-2ubuntu1
1.4.25-2ubuntu1.2
1.4.25-2ubuntu1.3
1.4.25-2ubuntu1.4
1.4.25-2ubuntu1.5
1.4.25-2ubuntu1.5+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "memcached",
            "binary_version": "1.4.25-2ubuntu1.5+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47783.json"
Ubuntu:Pro:18.04:LTS
memcached

Package

Name
memcached
Purl
pkg:deb/ubuntu/memcached?arch=source&distro=esm-infra%2Fbionic

Affected ranges

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

Affected versions

1.*
1.4.33-1ubuntu3
1.5.4-1ubuntu2
1.5.4-1ubuntu3
1.5.6-0ubuntu1
1.5.6-0ubuntu1.1
1.5.6-0ubuntu1.2
1.5.6-0ubuntu1.2+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "memcached",
            "binary_version": "1.5.6-0ubuntu1.2+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47783.json"