UBUNTU-CVE-2026-32239

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Source
https://ubuntu.com/security/CVE-2026-32239
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32239.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-32239
Upstream
Published
2026-03-12T20:16:00Z
Modified
2026-04-27T18:56:44.559124Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Cap'n Proto is a data interchange format and capability-based RPC system. Prior to 1.4.0, a negative Content-Length value was converted to unsigned, treating it as an impossibly large length instead. In theory, this bug could enable HTTP request/response smuggling. This vulnerability is fixed in 1.4.0.

References

Affected packages

Ubuntu:14.04:LTS
capnproto

Package

Name
capnproto
Purl
pkg:deb/ubuntu/capnproto@0.4.0-1ubuntu2.1?arch=source&distro=trusty

Affected ranges

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

Affected versions

0.*
0.2.1-1
0.4.0~git20131030+e7d2778-0ubuntu1
0.4.0-1ubuntu1
0.4.0-1ubuntu2
0.4.0-1ubuntu2.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "capnproto",
            "binary_version": "0.4.0-1ubuntu2.1"
        },
        {
            "binary_name": "libcapnp-0.4.0",
            "binary_version": "0.4.0-1ubuntu2.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32239.json"
Ubuntu:16.04:LTS
capnproto

Package

Name
capnproto
Purl
pkg:deb/ubuntu/capnproto@0.5.3-2ubuntu1.1?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*
0.4.0-1ubuntu3
0.5.3-2ubuntu1
0.5.3-2ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "capnproto",
            "binary_version": "0.5.3-2ubuntu1.1"
        },
        {
            "binary_name": "libcapnp-0.5.3",
            "binary_version": "0.5.3-2ubuntu1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32239.json"
Ubuntu:18.04:LTS
capnproto

Package

Name
capnproto
Purl
pkg:deb/ubuntu/capnproto@0.6.1-1ubuntu1?arch=source&distro=bionic

Affected ranges

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

Affected versions

0.*
0.5.3-2ubuntu2
0.6.1-1
0.6.1-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "capnproto",
            "binary_version": "0.6.1-1ubuntu1"
        },
        {
            "binary_name": "libcapnp-0.6.1",
            "binary_version": "0.6.1-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32239.json"
Ubuntu:20.04:LTS
capnproto

Package

Name
capnproto
Purl
pkg:deb/ubuntu/capnproto@0.7.0-6?arch=source&distro=focal

Affected ranges

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

Affected versions

0.*
0.7.0-5
0.7.0-5build1
0.7.0-6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "capnproto",
            "binary_version": "0.7.0-6"
        },
        {
            "binary_name": "libcapnp-0.7.0",
            "binary_version": "0.7.0-6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32239.json"
Ubuntu:22.04:LTS
capnproto

Package

Name
capnproto
Purl
pkg:deb/ubuntu/capnproto@0.8.0-2ubuntu2?arch=source&distro=jammy

Affected ranges

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

Affected versions

0.*
0.7.0-7build1
0.8.0-2ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "capnproto",
            "binary_version": "0.8.0-2ubuntu2"
        },
        {
            "binary_name": "libcapnp-0.8.0",
            "binary_version": "0.8.0-2ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32239.json"
Ubuntu:24.04:LTS
capnproto

Package

Name
capnproto
Purl
pkg:deb/ubuntu/capnproto@1.0.1-4?arch=source&distro=noble

Affected ranges

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

Affected versions

0.*
0.9.2-3
1.*
1.0.1-2
1.0.1-3
1.0.1-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "capnproto",
            "binary_version": "1.0.1-4"
        },
        {
            "binary_name": "libcapnp-1.0.1",
            "binary_version": "1.0.1-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32239.json"
Ubuntu:25.10
capnproto

Package

Name
capnproto
Purl
pkg:deb/ubuntu/capnproto@1.1.0-2?arch=source&distro=questing

Affected ranges

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

Affected versions

1.*
1.1.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "capnproto",
            "binary_version": "1.1.0-2"
        },
        {
            "binary_name": "libcapnp-1.1.0",
            "binary_version": "1.1.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32239.json"
Ubuntu:26.04
capnproto

Package

Name
capnproto
Purl
pkg:deb/ubuntu/capnproto@1.1.0-2.1?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.1.0-2
1.1.0-2.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "capnproto",
            "binary_version": "1.1.0-2.1"
        },
        {
            "binary_name": "libcapnp-1.1.0",
            "binary_version": "1.1.0-2.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32239.json"