UBUNTU-CVE-2026-40560

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Source
https://ubuntu.com/security/CVE-2026-40560
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40560.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-40560
Upstream
Published
2026-04-29T00:16:00Z
Modified
2026-05-20T16:12:58.818799686Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Starman versions before 0.4018 for Perl allows HTTP Request Smuggling via Improper Header Precedence. Starman incorrectly prioritizes "Content-Length" over "Transfer-Encoding: chunked" when both headers are present in an HTTP request. Per RFC 7230 3.3.3, Transfer-Encoding must take precedence. An attacker could exploit this to smuggle malicious HTTP requests via a front-end reverse proxy.

References

Affected packages

Ubuntu:16.04:LTS
starman

Package

Name
starman
Purl
pkg:deb/ubuntu/starman?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*
0.4014-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.4014-1",
            "binary_name": "starman"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40560.json"
Ubuntu:18.04:LTS
starman

Package

Name
starman
Purl
pkg:deb/ubuntu/starman?arch=source&distro=bionic

Affected ranges

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

Affected versions

0.*
0.4014-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.4014-1",
            "binary_name": "starman"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40560.json"
Ubuntu:20.04:LTS
starman

Package

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

Affected ranges

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

Affected versions

0.*
0.4014-3
0.4015-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.4015-1",
            "binary_name": "starman"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40560.json"
Ubuntu:22.04:LTS
starman

Package

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

Affected ranges

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

Affected versions

0.*
0.4015-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.4015-1",
            "binary_name": "starman"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40560.json"
Ubuntu:24.04:LTS
starman

Package

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

Affected ranges

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

Affected versions

0.*
0.4016-1
0.4017-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.4017-1",
            "binary_name": "starman"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40560.json"
Ubuntu:25.10
starman

Package

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

Affected ranges

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

Affected versions

0.*
0.4017-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.4017-1",
            "binary_name": "starman"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40560.json"
Ubuntu:26.04:LTS
starman

Package

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

Affected ranges

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

Affected versions

0.*
0.4017-1
0.4017-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.4017-1build1",
            "binary_name": "starman"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40560.json"