UBUNTU-CVE-2026-90698

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Source

https://ubuntu.com/security/CVE-2026-90698

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-90698.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-90698

Upstream

CVE-2026-90698

Published

2026-09-15T00:00:00Z

Modified

2026-09-15T14:31:34Z

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
5.5 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

A security flaw has been discovered in memcached 1.6.41/1.6.42/1.6.43. This vulnerability affects the function try_read_command_asciiauth of the file proto_text.c of the component mcmc Tokenizer. The manipulation results in out-of-bounds read. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.44 is able to resolve this issue. The patch is identified as af05c9302bba508b736c3da1d5670f63fe8b7db4. You should upgrade the affected component.

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

0 Unknown 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-2026-90698.json"

Ubuntu:22.04:LTS

memcached

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

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

1.6.14-1ubuntu0.2

Ecosystem specific

{
    "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-2026-90698.json"

Ubuntu:24.04:LTS

memcached

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.6.21-1

1.6.22-1

1.6.23-1

1.6.24-1build1

1.6.24-1build3

1.6.24-1ubuntu0.1

1.6.24-1ubuntu0.2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "memcached",
            "binary_version": "1.6.24-1ubuntu0.2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-90698.json"

Ubuntu:26.04:LTS

memcached

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.6.38-1build1

1.6.39-2

1.6.40-1

1.6.40-1ubuntu0.1

1.6.40-1ubuntu0.2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "memcached",
            "binary_version": "1.6.40-1ubuntu0.2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-90698.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

0 Unknown 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-2026-90698.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

0 Unknown 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-2026-90698.json"