UBUNTU-CVE-2026-23934

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Source
https://ubuntu.com/security/CVE-2026-23934
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23934.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-23934
Upstream
  • CVE-2026-23934
Published
2026-08-18T13:17:00Z
Modified
2026-09-02T19:35:31Z
Severity
  • 5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An authenticated user is able to cause disproportionate CPU load on the Frontend webserver by sending specifically crafted requests to the Frontend validate.api.exists action, leading to potential denial of service.

References

Affected packages

Ubuntu:26.04:LTS
zabbix

Package

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

Affected ranges

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

Affected versions

1:7.*
1:7.0.10+dfsg-2build1
1:7.0.22+dfsg-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "zabbix-agent",
            "binary_version": "1:7.0.22+dfsg-1"
        },
        {
            "binary_name": "zabbix-agent2",
            "binary_version": "1:7.0.22+dfsg-1"
        },
        {
            "binary_name": "zabbix-frontend-php",
            "binary_version": "1:7.0.22+dfsg-1"
        },
        {
            "binary_name": "zabbix-java-gateway",
            "binary_version": "1:7.0.22+dfsg-1"
        },
        {
            "binary_name": "zabbix-proxy-mysql",
            "binary_version": "1:7.0.22+dfsg-1"
        },
        {
            "binary_name": "zabbix-proxy-pgsql",
            "binary_version": "1:7.0.22+dfsg-1"
        },
        {
            "binary_name": "zabbix-proxy-sqlite3",
            "binary_version": "1:7.0.22+dfsg-1"
        },
        {
            "binary_name": "zabbix-sender",
            "binary_version": "1:7.0.22+dfsg-1"
        },
        {
            "binary_name": "zabbix-server-mysql",
            "binary_version": "1:7.0.22+dfsg-1"
        },
        {
            "binary_name": "zabbix-server-pgsql",
            "binary_version": "1:7.0.22+dfsg-1"
        },
        {
            "binary_name": "zabbix-web-service",
            "binary_version": "1:7.0.22+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23934.json"
Ubuntu:Pro:14.04:LTS
zabbix

Package

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

Affected ranges

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

Affected versions

1:2.*
1:2.0.6+dfsg-1ubuntu2
1:2.2.0+dfsg-1ubuntu1
1:2.2.0+dfsg-6ubuntu1
1:2.2.1+dfsg-1ubuntu3
1:2.2.2+dfsg-1ubuntu1
1:2.2.2+dfsg-1ubuntu1+esm1
1:2.2.2+dfsg-1ubuntu1+esm3
1:2.2.2+dfsg-1ubuntu1+esm4
1:2.2.2+dfsg-1ubuntu1+esm5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "zabbix-agent",
            "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5"
        },
        {
            "binary_name": "zabbix-frontend-php",
            "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5"
        },
        {
            "binary_name": "zabbix-java-gateway",
            "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5"
        },
        {
            "binary_name": "zabbix-proxy-mysql",
            "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5"
        },
        {
            "binary_name": "zabbix-proxy-pgsql",
            "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5"
        },
        {
            "binary_name": "zabbix-proxy-sqlite3",
            "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5"
        },
        {
            "binary_name": "zabbix-server-mysql",
            "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5"
        },
        {
            "binary_name": "zabbix-server-pgsql",
            "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23934.json"
Ubuntu:Pro:16.04:LTS
zabbix

Package

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

Affected ranges

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

Affected versions

1:2.*
1:2.4.6+dfsg-1
1:2.4.7+dfsg-1
1:2.4.7+dfsg-2
1:2.4.7+dfsg-2ubuntu2
1:2.4.7+dfsg-2ubuntu2.1
1:2.4.7+dfsg-2ubuntu2.1+esm1
1:2.4.7+dfsg-2ubuntu2.1+esm2
1:2.4.7+dfsg-2ubuntu2.1+esm3
1:2.4.7+dfsg-2ubuntu2.1+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "zabbix-agent",
            "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4"
        },
        {
            "binary_name": "zabbix-frontend-php",
            "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4"
        },
        {
            "binary_name": "zabbix-java-gateway",
            "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4"
        },
        {
            "binary_name": "zabbix-proxy-mysql",
            "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4"
        },
        {
            "binary_name": "zabbix-proxy-pgsql",
            "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4"
        },
        {
            "binary_name": "zabbix-proxy-sqlite3",
            "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4"
        },
        {
            "binary_name": "zabbix-server-mysql",
            "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4"
        },
        {
            "binary_name": "zabbix-server-pgsql",
            "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23934.json"
Ubuntu:Pro:18.04:LTS
zabbix

Package

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

Affected ranges

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

Affected versions

1:3.*
1:3.0.7+dfsg-3
1:3.0.12+dfsg-1
1:3.0.12+dfsg-1ubuntu0.1~esm1
1:3.0.12+dfsg-1ubuntu0.1~esm2
1:3.0.12+dfsg-1ubuntu0.1~esm3
1:3.0.12+dfsg-1ubuntu0.1~esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "zabbix-agent",
            "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4"
        },
        {
            "binary_name": "zabbix-frontend-php",
            "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4"
        },
        {
            "binary_name": "zabbix-java-gateway",
            "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4"
        },
        {
            "binary_name": "zabbix-proxy-mysql",
            "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4"
        },
        {
            "binary_name": "zabbix-proxy-pgsql",
            "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4"
        },
        {
            "binary_name": "zabbix-proxy-sqlite3",
            "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4"
        },
        {
            "binary_name": "zabbix-server-mysql",
            "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4"
        },
        {
            "binary_name": "zabbix-server-pgsql",
            "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23934.json"
Ubuntu:Pro:20.04:LTS
zabbix

Package

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

Affected ranges

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

Affected versions

1:4.*
1:4.0.4+dfsg-1build2
1:4.0.4+dfsg-1build3
1:4.0.11+dfsg-1
1:4.0.14+dfsg-1
1:4.0.15+dfsg-1
1:4.0.16+dfsg-1
1:4.0.16+dfsg-1build1
1:4.0.17+dfsg-1
1:4.0.17+dfsg-1ubuntu0.1~esm1
1:4.0.17+dfsg-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "zabbix-agent",
            "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "zabbix-frontend-php",
            "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "zabbix-java-gateway",
            "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "zabbix-proxy-mysql",
            "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "zabbix-proxy-pgsql",
            "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "zabbix-proxy-sqlite3",
            "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "zabbix-server-mysql",
            "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "zabbix-server-pgsql",
            "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23934.json"
Ubuntu:Pro:22.04:LTS
zabbix

Package

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

Affected ranges

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

Affected versions

1:5.*
1:5.0.8+dfsg-1build1
1:5.0.14+dfsg-1
1:5.0.17+dfsg-1
1:5.0.17+dfsg-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "zabbix-agent",
            "binary_version": "1:5.0.17+dfsg-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "zabbix-frontend-php",
            "binary_version": "1:5.0.17+dfsg-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "zabbix-java-gateway",
            "binary_version": "1:5.0.17+dfsg-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "zabbix-proxy-mysql",
            "binary_version": "1:5.0.17+dfsg-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "zabbix-proxy-pgsql",
            "binary_version": "1:5.0.17+dfsg-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "zabbix-proxy-sqlite3",
            "binary_version": "1:5.0.17+dfsg-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "zabbix-server-mysql",
            "binary_version": "1:5.0.17+dfsg-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "zabbix-server-pgsql",
            "binary_version": "1:5.0.17+dfsg-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-23934.json"