UBUNTU-CVE-2026-32884

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Source
https://ubuntu.com/security/CVE-2026-32884
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32884.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-32884
Upstream
Published
2026-03-30T21:17:00Z
Modified
2026-05-20T16:25:23Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Botan is a C++ cryptography library. Prior to version 3.11.0, during processing of an X.509 certificate path using name constraints which restrict the set of allowable DNS names, if no subject alternative name is defined in the end-entity certificate Botan would check that the CN was allowed by the DNS name constraints, even though this check is technically not required by RFC 5280. However this check failed to account for the possibility of a mixed-case CN. Thus a certificate with CN=Sub.EVIL.COM and no subject alternative name would bypasses an excludedSubtrees constraint for evil.com because the comparison is case-sensitive. This issue has been patched in version 3.11.0.

References

Affected packages

Ubuntu:16.04:LTS
botan1.10

Package

Name
botan1.10
Purl
pkg:deb/ubuntu/botan1.10?arch=source&distro=xenial

Affected ranges

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

Affected versions

1.*
1.10.10-6
1.10.12-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libbotan-1.10-1",
            "binary_version": "1.10.12-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32884.json"
Ubuntu:18.04:LTS
botan

Package

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

Affected ranges

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

Affected versions

2.*
2.4.0-3
2.4.0-4
2.4.0-5ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "botan",
            "binary_version": "2.4.0-5ubuntu1"
        },
        {
            "binary_name": "libbotan-2-4",
            "binary_version": "2.4.0-5ubuntu1"
        },
        {
            "binary_name": "python3-botan",
            "binary_version": "2.4.0-5ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32884.json"
botan1.10

Package

Name
botan1.10
Purl
pkg:deb/ubuntu/botan1.10?arch=source&distro=bionic

Affected ranges

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

Affected versions

1.*
1.10.16-1
1.10.17-0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libbotan-1.10-1",
            "binary_version": "1.10.17-0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32884.json"
Ubuntu:20.04:LTS
botan

Package

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

Affected ranges

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

Affected versions

2.*
2.9.0-2
2.9.0-2build1
2.12.1-2
2.12.1-2build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "botan",
            "binary_version": "2.12.1-2build1"
        },
        {
            "binary_name": "libbotan-2-12",
            "binary_version": "2.12.1-2build1"
        },
        {
            "binary_name": "python3-botan",
            "binary_version": "2.12.1-2build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32884.json"
Ubuntu:25.10
botan

Package

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

Affected ranges

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

Affected versions

2.*
2.19.5+dfsg-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libbotan-2-19",
            "binary_version": "2.19.5+dfsg-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32884.json"
botan3

Package

Name
botan3
Purl
pkg:deb/ubuntu/botan3?arch=source&distro=questing

Affected ranges

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

Affected versions

3.*
3.7.1+dfsg-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "botan",
            "binary_version": "3.7.1+dfsg-2"
        },
        {
            "binary_name": "libbotan-3-7",
            "binary_version": "3.7.1+dfsg-2"
        },
        {
            "binary_name": "python3-botan",
            "binary_version": "3.7.1+dfsg-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32884.json"
Ubuntu:26.04:LTS
botan3

Package

Name
botan3
Purl
pkg:deb/ubuntu/botan3?arch=source&distro=resolute

Affected ranges

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

Affected versions

3.*
3.7.1+dfsg-2
3.10.0+dfsg-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "botan",
            "binary_version": "3.10.0+dfsg-2"
        },
        {
            "binary_name": "libbotan-3-10",
            "binary_version": "3.10.0+dfsg-2"
        },
        {
            "binary_name": "python3-botan",
            "binary_version": "3.10.0+dfsg-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32884.json"
Ubuntu:Pro:14.04:LTS
botan1.10

Package

Name
botan1.10
Purl
pkg:deb/ubuntu/botan1.10?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

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

Affected versions

1.*
1.10.5-1
1.10.5-1ubuntu1
1.10.5-1+deb7u1ubuntu0.14.04.1
1.10.5-1+deb7u1ubuntu0.14.04.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libbotan-1.10-0",
            "binary_version": "1.10.5-1+deb7u1ubuntu0.14.04.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32884.json"
Ubuntu:Pro:22.04:LTS
botan

Package

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

Affected ranges

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

Affected versions

2.*
2.17.3+dfsg-3
2.19.1+dfsg-2ubuntu1
2.19.1+dfsg-2ubuntu1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "botan",
            "binary_version": "2.19.1+dfsg-2ubuntu1+esm1"
        },
        {
            "binary_name": "libbotan-2-19",
            "binary_version": "2.19.1+dfsg-2ubuntu1+esm1"
        },
        {
            "binary_name": "python3-botan",
            "binary_version": "2.19.1+dfsg-2ubuntu1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32884.json"
Ubuntu:Pro:24.04:LTS
botan

Package

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

Affected ranges

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

Affected versions

2.*
2.19.3+dfsg-1ubuntu1
2.19.3+dfsg-1ubuntu2
2.19.3+dfsg-1ubuntu2+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "botan",
            "binary_version": "2.19.3+dfsg-1ubuntu2+esm1"
        },
        {
            "binary_name": "libbotan-2-19",
            "binary_version": "2.19.3+dfsg-1ubuntu2+esm1"
        },
        {
            "binary_name": "python3-botan",
            "binary_version": "2.19.3+dfsg-1ubuntu2+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32884.json"