UBUNTU-CVE-2026-5720

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Source
https://ubuntu.com/security/CVE-2026-5720
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5720.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-5720
Upstream
Downstream
Related
Published
2026-04-17T22:16:00Z
Modified
2026-09-07T19:00:03Z
Severity
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

miniupnpd contains an integer underflow vulnerability in SOAPAction header parsing that allows remote attackers to cause a denial of service or information disclosure by sending a malformed SOAPAction header with a single quote. Attackers can trigger an out-of-bounds memory read by exploiting improper length validation in ParseHttpHeaders(), where the parsed length underflows to a large unsigned value when passed to memchr(), causing the process to scan memory far beyond the allocated HTTP request buffer.

References

Affected packages

Ubuntu:25.10
miniupnpd

Package

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

Affected ranges

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

Affected versions

2.*
2.3.7-2
2.3.9-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "miniupnpd",
            "binary_version": "2.3.9-2"
        },
        {
            "binary_name": "miniupnpd-iptables",
            "binary_version": "2.3.9-2"
        },
        {
            "binary_name": "miniupnpd-nftables",
            "binary_version": "2.3.9-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5720.json"
Ubuntu:Pro:16.04:LTS
miniupnpd

Package

Name
miniupnpd
Purl
pkg:deb/ubuntu/miniupnpd?arch=source&distro=esm-apps-legacy%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.8.20140523-4.1+deb9u2ubuntu0.1~esm1

Affected versions

1.*
1.8.20140523-4
1.8.20140523-4.1+deb9u1build0.16.04.1
1.8.20140523-4.1+deb9u2build0.16.04.1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "miniupnpd",
            "binary_version": "1.8.20140523-4.1+deb9u2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5720.json"
Ubuntu:Pro:18.04:LTS
miniupnpd

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.0.20171212-2ubuntu0.1~esm1

Affected versions

1.*
1.8.20140523-4.1
1.8.20140523-4.2
2.*
2.0.20171212-1
2.0.20171212-2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "miniupnpd",
            "binary_version": "2.0.20171212-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5720.json"
Ubuntu:Pro:20.04:LTS
miniupnpd

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.1-6.1ubuntu0.1~esm1

Affected versions

2.*
2.1-6ubuntu2
2.1-6.1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "miniupnpd",
            "binary_version": "2.1-6.1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5720.json"
Ubuntu:Pro:22.04:LTS
miniupnpd

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.2.3-1ubuntu0.1~esm1

Affected versions

2.*
2.2.1-1
2.2.3-1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "miniupnpd",
            "binary_version": "2.2.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "miniupnpd-iptables",
            "binary_version": "2.2.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "miniupnpd-nftables",
            "binary_version": "2.2.3-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5720.json"
Ubuntu:Pro:24.04:LTS
miniupnpd

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.3.4-1ubuntu0.1~esm1

Affected versions

2.*
2.3.3-1
2.3.4-1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "miniupnpd",
            "binary_version": "2.3.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "miniupnpd-iptables",
            "binary_version": "2.3.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "miniupnpd-nftables",
            "binary_version": "2.3.4-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5720.json"
Ubuntu:Pro:26.04:LTS
miniupnpd

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.3.9-2ubuntu0.1~esm1

Affected versions

2.*
2.3.9-2
2.3.9-2build1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "miniupnpd",
            "binary_version": "2.3.9-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "miniupnpd-iptables",
            "binary_version": "2.3.9-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "miniupnpd-nftables",
            "binary_version": "2.3.9-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5720.json"