UBUNTU-CVE-2026-56115

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Source
https://ubuntu.com/security/CVE-2026-56115
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56115.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-56115
Upstream
Published
2026-06-23T17:17:00Z
Modified
2026-06-29T23:19:15.316323371Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Bootimus through 0.1.70 contains a broken access control vulnerability that allows authenticated low-privileged users to perform administrative actions by exploiting missing role enforcement in the JWTMiddleware function in internal/auth/auth.go, which validates JWT tokens and account status but fails to inspect the is_admin flag. Attackers can send requests to any endpoint under the /api/users path to create new administrator accounts or reset administrator passwords, thereby gaining full control of the server and the ability to modify boot menus and installation scripts served to PXE clients.

References

Affected packages

Ubuntu:24.04:LTS / dhcpcd

Package

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

Affected ranges

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

Affected versions

1:10.*
1:10.0.2-3ubuntu3
1:10.0.5-1
1:10.0.5-2
1:10.0.5-3
1:10.0.5-4
1:10.0.5-5
1:10.0.6-1
1:10.0.6-1ubuntu1
1:10.0.6-1ubuntu2
1:10.0.6-1ubuntu3
1:10.0.6-1ubuntu3.1
1:10.0.6-1ubuntu3.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dhcpcd",
            "binary_version": "1:10.0.6-1ubuntu3.2"
        },
        {
            "binary_name": "dhcpcd-base",
            "binary_version": "1:10.0.6-1ubuntu3.2"
        },
        {
            "binary_name": "dhcpcd5",
            "binary_version": "1:10.0.6-1ubuntu3.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56115.json"

Ubuntu:25.10 / dhcpcd

Package

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

Affected ranges

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

Affected versions

1:10.*
1:10.1.0-8
1:10.1.0-10
1:10.1.0-11
1:10.1.0-12
1:10.2.4-3
1:10.2.4-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dhcpcd",
            "binary_version": "1:10.2.4-4"
        },
        {
            "binary_name": "dhcpcd-base",
            "binary_version": "1:10.2.4-4"
        },
        {
            "binary_name": "dhcpcd5",
            "binary_version": "1:10.2.4-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56115.json"

Ubuntu:26.04:LTS / dhcpcd

Package

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

Affected ranges

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

Affected versions

1:10.*
1:10.2.4-4
1:10.3.0-2
1:10.3.0-3
1:10.3.0-7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dhcpcd",
            "binary_version": "1:10.3.0-7"
        },
        {
            "binary_name": "dhcpcd-base",
            "binary_version": "1:10.3.0-7"
        },
        {
            "binary_name": "dhcpcd5",
            "binary_version": "1:10.3.0-7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56115.json"