USN-8822-1

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Source
https://ubuntu.com/security/notices/USN-8822-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8822-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-8822-1
Upstream
CVE (2)
Related
UBUNTU (2)
Published
2026-09-25T02:39:11Z
Modified
2026-09-28T11:42:19Z
Summary
libwebsockets vulnerabilities
Details

It was discovered that Libwebsockets incorrectly handled certain SSH protocol messages in its SSH protocol handler. A remote attacker could possibly use this issue to cause Libwebsockets to consume excessive resources, resulting in a denial of service. (CVE-2026-10650)

It was discovered that Libwebsockets incorrectly handled certain malformed CBOR data. A remote attacker could possibly use this issue to cause Libwebsockets to crash, resulting in a denial of service, or execute arbitrary code. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-78161)

References

Affected packages

Ubuntu:Pro:20.04:LTS / libwebsockets

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.2.1-3ubuntu0.1~esm2

Affected versions

2.*
2.0.3-3build1
3.*
3.2.1-3
3.2.1-3ubuntu0.1~esm1

Ecosystem specific 

{
    "availability":  "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries":  [
        {
            "binary_name":  "libwebsockets-test-server",
            "binary_version":  "3.2.1-3ubuntu0.1~esm2"
        },
        {
            "binary_name":  "libwebsockets-test-server-common",
            "binary_version":  "3.2.1-3ubuntu0.1~esm2"
        },
        {
            "binary_name":  "libwebsockets15",
            "binary_version":  "3.2.1-3ubuntu0.1~esm2"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2026-10650",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "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",
                    "type":  "CVSS_V4"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:Pro:20.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8822-1.json"

Ubuntu:Pro:22.04:LTS / libwebsockets

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.0.20-2ubuntu1.1+esm1

Affected versions

4.*
4.0.20-2
4.0.20-2ubuntu1
4.0.20-2ubuntu1.1

Ecosystem specific 

{
    "availability":  "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries":  [
        {
            "binary_name":  "libwebsockets-test-server",
            "binary_version":  "4.0.20-2ubuntu1.1+esm1"
        },
        {
            "binary_name":  "libwebsockets-test-server-common",
            "binary_version":  "4.0.20-2ubuntu1.1+esm1"
        },
        {
            "binary_name":  "libwebsockets16",
            "binary_version":  "4.0.20-2ubuntu1.1+esm1"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2026-10650",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "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",
                    "type":  "CVSS_V4"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:Pro:22.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8822-1.json"

Ubuntu:Pro:24.04:LTS / libwebsockets

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.3.3-1.1ubuntu0.1~esm2

Affected versions

4.*
4.3.2-4
4.3.3-1
4.3.3-1.1build1
4.3.3-1.1build2
4.3.3-1.1build3
4.3.3-1.1ubuntu0.1~esm1

Ecosystem specific 

{
    "availability":  "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries":  [
        {
            "binary_name":  "libwebsockets-evlib-ev",
            "binary_version":  "4.3.3-1.1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "libwebsockets-evlib-glib",
            "binary_version":  "4.3.3-1.1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "libwebsockets-evlib-uv",
            "binary_version":  "4.3.3-1.1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "libwebsockets-test-server",
            "binary_version":  "4.3.3-1.1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "libwebsockets-test-server-common",
            "binary_version":  "4.3.3-1.1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "libwebsockets19t64",
            "binary_version":  "4.3.3-1.1ubuntu0.1~esm2"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2026-10650",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "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",
                    "type":  "CVSS_V4"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2026-78161",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
                    "type":  "CVSS_V4"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:Pro:24.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8822-1.json"

Ubuntu:26.04:LTS / libwebsockets

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.3.5-3ubuntu1.1

Affected versions

4.*
4.3.5-1
4.3.5-3
4.3.5-3ubuntu1

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "libwebsockets-evlib-ev",
            "binary_version":  "4.3.5-3ubuntu1.1"
        },
        {
            "binary_name":  "libwebsockets-evlib-glib",
            "binary_version":  "4.3.5-3ubuntu1.1"
        },
        {
            "binary_name":  "libwebsockets-evlib-uv",
            "binary_version":  "4.3.5-3ubuntu1.1"
        },
        {
            "binary_name":  "libwebsockets-test-server",
            "binary_version":  "4.3.5-3ubuntu1.1"
        },
        {
            "binary_name":  "libwebsockets-test-server-common",
            "binary_version":  "4.3.5-3ubuntu1.1"
        },
        {
            "binary_name":  "libwebsockets19t64",
            "binary_version":  "4.3.5-3ubuntu1.1"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2026-10650",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "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",
                    "type":  "CVSS_V4"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2026-78161",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
                    "type":  "CVSS_V4"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:26.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8822-1.json"