UBUNTU-CVE-2026-1858

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Source
https://ubuntu.com/security/CVE-2026-1858
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1858.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-1858
Upstream
  • CVE-2026-1858
Published
2026-04-29T21:16:00Z
Modified
2026-05-20T16:24:08.174796556Z
Severity
  • 4.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

wget2 accepts a server certificate with incorrect Key Usage (KU) or Extended Key Usage (EKU). If the attackers compromise a certificate (with the associated private key) issued for a different purpose, they may be able to reuse it for TLS server authentication.

References

Affected packages

Ubuntu:18.04:LTS
wget2

Package

Name
wget2
Purl
pkg:deb/ubuntu/wget2?arch=source&distro=bionic

Affected ranges

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

Affected versions

0.*
0.0.20170806-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.0.20170806-1",
            "binary_name": "libwget0"
        },
        {
            "binary_version": "0.0.20170806-1",
            "binary_name": "wget2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1858.json"
Ubuntu:20.04:LTS
wget2

Package

Name
wget2
Purl
pkg:deb/ubuntu/wget2?arch=source&distro=focal

Affected ranges

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

Affected versions

1.*
1.99.1-2
1.99.1-2.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.99.1-2.1",
            "binary_name": "libwget0"
        },
        {
            "binary_version": "1.99.1-2.1",
            "binary_name": "wget2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1858.json"
Ubuntu:22.04:LTS
wget2

Package

Name
wget2
Purl
pkg:deb/ubuntu/wget2?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.99.1-2.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.99.1-2.2",
            "binary_name": "libwget0"
        },
        {
            "binary_version": "1.99.1-2.2",
            "binary_name": "wget2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1858.json"
Ubuntu:24.04:LTS
wget2

Package

Name
wget2
Purl
pkg:deb/ubuntu/wget2?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.99.1-2.2
2.*
2.1.0-2
2.1.0-2.1build1
2.1.0-2.1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.1.0-2.1build2",
            "binary_name": "libwget2t64"
        },
        {
            "binary_version": "2.1.0-2.1build2",
            "binary_name": "wget2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1858.json"
Ubuntu:25.10
wget2

Package

Name
wget2
Purl
pkg:deb/ubuntu/wget2?arch=source&distro=questing

Affected ranges

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

Affected versions

2.*
2.2.0+ds-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.2.0+ds-1",
            "binary_name": "libwget3"
        },
        {
            "binary_version": "2.2.0+ds-1",
            "binary_name": "wget2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1858.json"
Ubuntu:26.04:LTS
wget2

Package

Name
wget2
Purl
pkg:deb/ubuntu/wget2?arch=source&distro=resolute

Affected ranges

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

Affected versions

2.*
2.2.0+ds-1
2.2.0+ds-2
2.2.0+ds-3
2.2.0+ds-3build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.2.0+ds-3build1",
            "binary_name": "libwget3"
        },
        {
            "binary_version": "2.2.0+ds-3build1",
            "binary_name": "wget2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1858.json"