UBUNTU-CVE-2026-18047

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Source
https://ubuntu.com/security/CVE-2026-18047
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-18047.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-18047
Upstream
  • CVE-2026-18047
Published
2026-07-28T13:17:00Z
Modified
2026-08-06T03:08:40Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in Dogtag PKI's ACME responder where the web.xml security constraints use exact URL pattern matching for admin-only enable/disable endpoints. By appending a trailing slash to the URL, an unauthenticated attacker can bypass the Tomcat authentication constraint while RESTEasy still routes the request to the handler, allowing unauthorized toggling of the ACME service state including persistent denial of service.

References

Affected packages

Ubuntu:Pro:16.04:LTS / dogtag-pki

Package

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

Affected ranges

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

Affected versions

10.*
10.2.6-1
10.2.6-2
10.2.6-3
10.2.6+git20160317-1
10.2.6+git20160317-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dogtag-pki",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "dogtag-pki-console-theme",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "dogtag-pki-server-theme",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libsymkey-java",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libsymkey-jni",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-base",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-ca",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-console",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-javadoc",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-kra",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-ocsp",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-server",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-tks",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-tools",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-tps",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-tps-client",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-18047.json"

Ubuntu:Pro:18.04:LTS / dogtag-pki

Package

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

Affected ranges

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

Affected versions

10.*
10.3.5+12-4ubuntu1
10.3.5+12-5
10.5.3-3
10.5.3-4
10.5.5-1
10.6.0~beta2-3
10.6.0-1ubuntu1
10.6.0-1ubuntu2
10.6.0-1ubuntu2+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dogtag-pki",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "dogtag-pki-console-theme",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "dogtag-pki-server-theme",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "libsymkey-java",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "libsymkey-jni",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "pki-base",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "pki-base-java",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "pki-ca",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "pki-console",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "pki-javadoc",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "pki-kra",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "pki-ocsp",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "pki-server",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "pki-tks",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "pki-tools",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "pki-tps",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "pki-tps-client",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        },
        {
            "binary_name": "python3-pki-base",
            "binary_version": "10.6.0-1ubuntu2+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-18047.json"

Ubuntu:Pro:20.04:LTS / dogtag-pki

Package

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

Affected ranges

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

Affected versions

10.*
10.7.3-4
10.8.3-1ubuntu1
10.8.3-1ubuntu1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dogtag-pki",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "dogtag-pki-console-theme",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "dogtag-pki-server-theme",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "libsymkey-java",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "libsymkey-jni",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "pki-base",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "pki-base-java",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "pki-ca",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "pki-console",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "pki-javadoc",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "pki-kra",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "pki-ocsp",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "pki-server",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "pki-tks",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "pki-tools",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "pki-tps",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "pki-tps-client",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        },
        {
            "binary_name": "python3-pki-base",
            "binary_version": "10.8.3-1ubuntu1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-18047.json"

Ubuntu:Pro:22.04:LTS / dogtag-pki

Package

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

Affected ranges

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

Affected versions

10.*
10.10.2-3build1
11.*
11.0.0-1
11.0.0-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dogtag-pki",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "dogtag-pki-console-theme",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "dogtag-pki-server-theme",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libsymkey-java",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libsymkey-jni",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-base",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-base-java",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-ca",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-console",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-javadoc",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-kra",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-ocsp",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-server",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-tks",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-tools",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-tps",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pki-tps-client",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "python3-pki-base",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-18047.json"