UBUNTU-CVE-2026-15711

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Source
https://ubuntu.com/security/CVE-2026-15711
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15711.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-15711
Upstream
  • CVE-2026-15711
Published
2026-07-14T20:16:00Z
Modified
2026-07-15T19:46:15.012545787Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A vulnerability was found in libsoup's WebSocket frame parsing implementation. The library fails to validate length rules specified in RFC 6455 ยง5.5, which mandates that all WebSocket control frames (e.g., PING, PONG, CLOSE) contain a payload of 125 bytes or less. A remote, unauthenticated attacker can exploit this by sending a non-compliant, oversized control frame. Because the parser handles this protocol violation improperly instead of throwing an immediate connection termination error, it triggers a internal processing crash, resulting in a remote denial of service (DoS) for applications utilizing libsoup WebSockets.

References

Affected packages

Ubuntu:22.04:LTS
libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/ubuntu/libsoup2.4?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*
2.72.0-3ubuntu3
2.74.1-1
2.74.2-2
2.74.2-3
2.74.2-3ubuntu0.1
2.74.2-3ubuntu0.2
2.74.2-3ubuntu0.3
2.74.2-3ubuntu0.4
2.74.2-3ubuntu0.5
2.74.2-3ubuntu0.6
2.74.2-3ubuntu0.7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.74.2-3ubuntu0.7",
            "binary_name": "gir1.2-soup-2.4"
        },
        {
            "binary_version": "2.74.2-3ubuntu0.7",
            "binary_name": "libsoup-gnome2.4-1"
        },
        {
            "binary_version": "2.74.2-3ubuntu0.7",
            "binary_name": "libsoup2.4-1"
        },
        {
            "binary_version": "2.74.2-3ubuntu0.7",
            "binary_name": "libsoup2.4-common"
        },
        {
            "binary_version": "2.74.2-3ubuntu0.7",
            "binary_name": "libsoup2.4-tests"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15711.json"
Ubuntu:24.04:LTS
libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/ubuntu/libsoup2.4?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*
2.74.3-1
2.74.3-2
2.74.3-3
2.74.3-6
2.74.3-6build1
2.74.3-6ubuntu1
2.74.3-6ubuntu1.1
2.74.3-6ubuntu1.2
2.74.3-6ubuntu1.3
2.74.3-6ubuntu1.4
2.74.3-6ubuntu1.5
2.74.3-6ubuntu1.6
2.74.3-6ubuntu1.7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.74.3-6ubuntu1.7",
            "binary_name": "gir1.2-soup-2.4"
        },
        {
            "binary_version": "2.74.3-6ubuntu1.7",
            "binary_name": "libsoup-2.4-1"
        },
        {
            "binary_version": "2.74.3-6ubuntu1.7",
            "binary_name": "libsoup-gnome-2.4-1"
        },
        {
            "binary_version": "2.74.3-6ubuntu1.7",
            "binary_name": "libsoup2.4-common"
        },
        {
            "binary_version": "2.74.3-6ubuntu1.7",
            "binary_name": "libsoup2.4-tests"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15711.json"
libsoup3

Package

Name
libsoup3
Purl
pkg:deb/ubuntu/libsoup3?arch=source&distro=noble

Affected ranges

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

Affected versions

3.*
3.4.2-4
3.4.4-1
3.4.4-2
3.4.4-4
3.4.4-5
3.4.4-5build1
3.4.4-5build2
3.4.4-5ubuntu0.1
3.4.4-5ubuntu0.2
3.4.4-5ubuntu0.3
3.4.4-5ubuntu0.4
3.4.4-5ubuntu0.5
3.4.4-5ubuntu0.6
3.4.4-5ubuntu0.7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.4.4-5ubuntu0.7",
            "binary_name": "gir1.2-soup-3.0"
        },
        {
            "binary_version": "3.4.4-5ubuntu0.7",
            "binary_name": "libsoup-3.0-0"
        },
        {
            "binary_version": "3.4.4-5ubuntu0.7",
            "binary_name": "libsoup-3.0-common"
        },
        {
            "binary_version": "3.4.4-5ubuntu0.7",
            "binary_name": "libsoup-3.0-tests"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15711.json"
Ubuntu:26.04:LTS
libsoup3

Package

Name
libsoup3
Purl
pkg:deb/ubuntu/libsoup3?arch=source&distro=resolute

Affected ranges

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

Affected versions

3.*
3.6.5-4
3.6.5-5
3.6.5-6
3.6.5-7
3.6.5-9
3.6.6-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.6.6-1",
            "binary_name": "gir1.2-soup-3.0"
        },
        {
            "binary_version": "3.6.6-1",
            "binary_name": "libsoup-3.0-0"
        },
        {
            "binary_version": "3.6.6-1",
            "binary_name": "libsoup-3.0-common"
        },
        {
            "binary_version": "3.6.6-1",
            "binary_name": "libsoup-3.0-tests"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15711.json"
Ubuntu:Pro:16.04:LTS
libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/ubuntu/libsoup2.4?arch=source&distro=esm-infra-legacy%2Fxenial

Affected ranges

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

Affected versions

2.*
2.50.0-2debian1
2.52.1-1
2.52.2-1
2.52.2-1ubuntu0.1
2.52.2-1ubuntu0.2
2.52.2-1ubuntu0.3
2.52.2-1ubuntu0.3+esm1
2.52.2-1ubuntu0.3+esm2
2.52.2-1ubuntu0.3+esm3
2.52.2-1ubuntu0.3+esm4
2.52.2-1ubuntu0.3+esm5
2.52.2-1ubuntu0.3+esm6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.52.2-1ubuntu0.3+esm6",
            "binary_name": "gir1.2-soup-2.4"
        },
        {
            "binary_version": "2.52.2-1ubuntu0.3+esm6",
            "binary_name": "libsoup-gnome2.4-1"
        },
        {
            "binary_version": "2.52.2-1ubuntu0.3+esm6",
            "binary_name": "libsoup2.4-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15711.json"
Ubuntu:Pro:18.04:LTS
libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/ubuntu/libsoup2.4?arch=source&distro=esm-infra%2Fbionic

Affected ranges

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

Affected versions

2.*
2.60.1-1
2.60.2-1
2.60.2-2
2.60.3-1
2.61.90-1
2.62.0-1
2.62.1-1
2.62.1-1ubuntu0.1
2.62.1-1ubuntu0.3
2.62.1-1ubuntu0.4
2.62.1-1ubuntu0.4+esm1
2.62.1-1ubuntu0.4+esm2
2.62.1-1ubuntu0.4+esm3
2.62.1-1ubuntu0.4+esm4
2.62.1-1ubuntu0.4+esm5
2.62.1-1ubuntu0.4+esm6
2.62.1-1ubuntu0.4+esm7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.62.1-1ubuntu0.4+esm7",
            "binary_name": "gir1.2-soup-2.4"
        },
        {
            "binary_version": "2.62.1-1ubuntu0.4+esm7",
            "binary_name": "libsoup-gnome2.4-1"
        },
        {
            "binary_version": "2.62.1-1ubuntu0.4+esm7",
            "binary_name": "libsoup2.4-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15711.json"
Ubuntu:Pro:20.04:LTS
libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/ubuntu/libsoup2.4?arch=source&distro=esm-infra%2Ffocal

Affected ranges

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

Affected versions

2.*
2.68.2-0ubuntu1
2.68.2-1
2.68.2-2
2.68.2-2build2
2.69.90-1
2.70.0-1
2.70.0-1ubuntu0.1
2.70.0-1ubuntu0.2
2.70.0-1ubuntu0.3
2.70.0-1ubuntu0.4
2.70.0-1ubuntu0.5
2.70.0-1ubuntu0.5+esm1
2.70.0-1ubuntu0.5+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.70.0-1ubuntu0.5+esm2",
            "binary_name": "gir1.2-soup-2.4"
        },
        {
            "binary_version": "2.70.0-1ubuntu0.5+esm2",
            "binary_name": "libsoup-gnome2.4-1"
        },
        {
            "binary_version": "2.70.0-1ubuntu0.5+esm2",
            "binary_name": "libsoup2.4-1"
        },
        {
            "binary_version": "2.70.0-1ubuntu0.5+esm2",
            "binary_name": "libsoup2.4-tests"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15711.json"
Ubuntu:Pro:22.04:LTS
libsoup3

Package

Name
libsoup3
Purl
pkg:deb/ubuntu/libsoup3?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

3.*
3.0.4-2
3.0.4-3
3.0.5-1
3.0.7-0ubuntu1
3.0.7-0ubuntu1+esm1
3.0.7-0ubuntu1+esm2
3.0.7-0ubuntu1+esm3
3.0.7-0ubuntu1+esm4
3.0.7-0ubuntu1+esm5
3.0.7-0ubuntu1+esm6
3.0.7-0ubuntu1+esm7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.0.7-0ubuntu1+esm7",
            "binary_name": "gir1.2-soup-3.0"
        },
        {
            "binary_version": "3.0.7-0ubuntu1+esm7",
            "binary_name": "libsoup-3.0-0"
        },
        {
            "binary_version": "3.0.7-0ubuntu1+esm7",
            "binary_name": "libsoup-3.0-common"
        },
        {
            "binary_version": "3.0.7-0ubuntu1+esm7",
            "binary_name": "libsoup-3.0-tests"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15711.json"
Ubuntu:Pro:26.04:LTS
libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/ubuntu/libsoup2.4?arch=source&distro=esm-apps%2Fresolute

Affected ranges

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

Affected versions

2.*
2.74.3-10.1ubuntu4
2.74.3-10.1ubuntu5
2.74.3-10.1ubuntu5+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.74.3-10.1ubuntu5+esm1",
            "binary_name": "gir1.2-soup-2.4"
        },
        {
            "binary_version": "2.74.3-10.1ubuntu5+esm1",
            "binary_name": "libsoup-2.4-1"
        },
        {
            "binary_version": "2.74.3-10.1ubuntu5+esm1",
            "binary_name": "libsoup-gnome-2.4-1"
        },
        {
            "binary_version": "2.74.3-10.1ubuntu5+esm1",
            "binary_name": "libsoup2.4-common"
        },
        {
            "binary_version": "2.74.3-10.1ubuntu5+esm1",
            "binary_name": "libsoup2.4-tests"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15711.json"