UBUNTU-CVE-2026-33007

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Source
https://ubuntu.com/security/CVE-2026-33007
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33007.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-33007
Upstream
  • CVE-2026-33007
Downstream
Related
Published
2026-05-05T00:00:00Z
Modified
2026-06-08T14:15:10.002344492Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

A NULL pointer dereference in the modauthnsocache in Apache HTTP Server 2.4.66 and earlier allows an unauthenticated remote user to crash a child process in a caching forward proxy configuration. Users are recommended to upgrade to version 2.4.67, which fixes this issue.

References

Affected packages

Ubuntu:22.04:LTS
apache2

Package

Name
apache2
Purl
pkg:deb/ubuntu/apache2?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.52-1ubuntu4.20

Affected versions

2.*
2.4.48-3.1ubuntu3
2.4.48-3.1ubuntu4
2.4.51-2ubuntu1
2.4.52-1ubuntu1
2.4.52-1ubuntu2
2.4.52-1ubuntu4
2.4.52-1ubuntu4.1
2.4.52-1ubuntu4.2
2.4.52-1ubuntu4.3
2.4.52-1ubuntu4.4
2.4.52-1ubuntu4.5
2.4.52-1ubuntu4.6
2.4.52-1ubuntu4.7
2.4.52-1ubuntu4.8
2.4.52-1ubuntu4.9
2.4.52-1ubuntu4.10
2.4.52-1ubuntu4.11
2.4.52-1ubuntu4.12
2.4.52-1ubuntu4.13
2.4.52-1ubuntu4.14
2.4.52-1ubuntu4.15
2.4.52-1ubuntu4.16
2.4.52-1ubuntu4.18
2.4.52-1ubuntu4.19

Ecosystem specific 

{
    "availability": "No subscription required",
    "priority_reason": "Apache httpd developers have rated this to be a low-severity issue",
    "binaries": [
        {
            "binary_name": "apache2",
            "binary_version": "2.4.52-1ubuntu4.20"
        },
        {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.52-1ubuntu4.20"
        },
        {
            "binary_name": "apache2-data",
            "binary_version": "2.4.52-1ubuntu4.20"
        },
        {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.52-1ubuntu4.20"
        },
        {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.52-1ubuntu4.20"
        },
        {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.52-1ubuntu4.20"
        },
        {
            "binary_name": "libapache2-mod-md",
            "binary_version": "2.4.52-1ubuntu4.20"
        },
        {
            "binary_name": "libapache2-mod-proxy-uwsgi",
            "binary_version": "2.4.52-1ubuntu4.20"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33007.json"
Ubuntu:24.04:LTS
apache2

Package

Name
apache2
Purl
pkg:deb/ubuntu/apache2?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.58-1ubuntu8.12

Affected versions

2.*
2.4.57-2ubuntu2
2.4.57-2ubuntu3
2.4.58-1ubuntu1
2.4.58-1ubuntu2
2.4.58-1ubuntu6
2.4.58-1ubuntu7
2.4.58-1ubuntu8
2.4.58-1ubuntu8.1
2.4.58-1ubuntu8.2
2.4.58-1ubuntu8.3
2.4.58-1ubuntu8.4
2.4.58-1ubuntu8.5
2.4.58-1ubuntu8.6
2.4.58-1ubuntu8.7
2.4.58-1ubuntu8.8
2.4.58-1ubuntu8.10
2.4.58-1ubuntu8.11

Ecosystem specific 

{
    "availability": "No subscription required",
    "priority_reason": "Apache httpd developers have rated this to be a low-severity issue",
    "binaries": [
        {
            "binary_name": "apache2",
            "binary_version": "2.4.58-1ubuntu8.12"
        },
        {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.58-1ubuntu8.12"
        },
        {
            "binary_name": "apache2-data",
            "binary_version": "2.4.58-1ubuntu8.12"
        },
        {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.58-1ubuntu8.12"
        },
        {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.58-1ubuntu8.12"
        },
        {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.58-1ubuntu8.12"
        },
        {
            "binary_name": "libapache2-mod-md",
            "binary_version": "2.4.58-1ubuntu8.12"
        },
        {
            "binary_name": "libapache2-mod-proxy-uwsgi",
            "binary_version": "2.4.58-1ubuntu8.12"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33007.json"
Ubuntu:25.10
apache2

Package

Name
apache2
Purl
pkg:deb/ubuntu/apache2?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.64-1ubuntu3.4

Affected versions

2.*
2.4.63-1ubuntu1
2.4.63-1ubuntu3
2.4.64-1ubuntu2
2.4.64-1ubuntu3
2.4.64-1ubuntu3.2
2.4.64-1ubuntu3.3

Ecosystem specific 

{
    "availability": "No subscription required",
    "priority_reason": "Apache httpd developers have rated this to be a low-severity issue",
    "binaries": [
        {
            "binary_name": "apache2",
            "binary_version": "2.4.64-1ubuntu3.4"
        },
        {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.64-1ubuntu3.4"
        },
        {
            "binary_name": "apache2-data",
            "binary_version": "2.4.64-1ubuntu3.4"
        },
        {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.64-1ubuntu3.4"
        },
        {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.64-1ubuntu3.4"
        },
        {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.64-1ubuntu3.4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33007.json"
Ubuntu:26.04:LTS
apache2

Package

Name
apache2
Purl
pkg:deb/ubuntu/apache2?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.66-2ubuntu2.1

Affected versions

2.*
2.4.64-1ubuntu3
2.4.65-3ubuntu1
2.4.66-2ubuntu1
2.4.66-2ubuntu2

Ecosystem specific 

{
    "availability": "No subscription required",
    "priority_reason": "Apache httpd developers have rated this to be a low-severity issue",
    "binaries": [
        {
            "binary_name": "apache2",
            "binary_version": "2.4.66-2ubuntu2.1"
        },
        {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.66-2ubuntu2.1"
        },
        {
            "binary_name": "apache2-data",
            "binary_version": "2.4.66-2ubuntu2.1"
        },
        {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.66-2ubuntu2.1"
        },
        {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.66-2ubuntu2.1"
        },
        {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.66-2ubuntu2.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33007.json"
Ubuntu:Pro:14.04:LTS
apache2

Package

Name
apache2
Purl
pkg:deb/ubuntu/apache2?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

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

Affected versions

2.*
2.4.6-2ubuntu2
2.4.6-2ubuntu3
2.4.6-2ubuntu4
2.4.7-1ubuntu1
2.4.7-1ubuntu2
2.4.7-1ubuntu3
2.4.7-1ubuntu4
2.4.7-1ubuntu4.1
2.4.7-1ubuntu4.4
2.4.7-1ubuntu4.5
2.4.7-1ubuntu4.6
2.4.7-1ubuntu4.7
2.4.7-1ubuntu4.8
2.4.7-1ubuntu4.9
2.4.7-1ubuntu4.10
2.4.7-1ubuntu4.11
2.4.7-1ubuntu4.13
2.4.7-1ubuntu4.15
2.4.7-1ubuntu4.16
2.4.7-1ubuntu4.17
2.4.7-1ubuntu4.18
2.4.7-1ubuntu4.19
2.4.7-1ubuntu4.20
2.4.7-1ubuntu4.21
2.4.7-1ubuntu4.22
2.4.7-1ubuntu4.22+esm1
2.4.7-1ubuntu4.22+esm2
2.4.7-1ubuntu4.22+esm3
2.4.7-1ubuntu4.22+esm4
2.4.7-1ubuntu4.22+esm5
2.4.7-1ubuntu4.22+esm6
2.4.7-1ubuntu4.22+esm8
2.4.7-1ubuntu4.22+esm9
2.4.7-1ubuntu4.22+esm10
2.4.7-1ubuntu4.22+esm12
2.4.7-1ubuntu4.22+esm13

Ecosystem specific 

{
    "priority_reason": "Apache httpd developers have rated this to be a low-severity issue",
    "binaries": [
        {
            "binary_name": "apache2",
            "binary_version": "2.4.7-1ubuntu4.22+esm13"
        },
        {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.7-1ubuntu4.22+esm13"
        },
        {
            "binary_name": "apache2-data",
            "binary_version": "2.4.7-1ubuntu4.22+esm13"
        },
        {
            "binary_name": "apache2-mpm-event",
            "binary_version": "2.4.7-1ubuntu4.22+esm13"
        },
        {
            "binary_name": "apache2-mpm-itk",
            "binary_version": "2.4.7-1ubuntu4.22+esm13"
        },
        {
            "binary_name": "apache2-mpm-prefork",
            "binary_version": "2.4.7-1ubuntu4.22+esm13"
        },
        {
            "binary_name": "apache2-mpm-worker",
            "binary_version": "2.4.7-1ubuntu4.22+esm13"
        },
        {
            "binary_name": "apache2-suexec",
            "binary_version": "2.4.7-1ubuntu4.22+esm13"
        },
        {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.7-1ubuntu4.22+esm13"
        },
        {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.7-1ubuntu4.22+esm13"
        },
        {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.7-1ubuntu4.22+esm13"
        },
        {
            "binary_name": "apache2.2-bin",
            "binary_version": "2.4.7-1ubuntu4.22+esm13"
        },
        {
            "binary_name": "libapache2-mod-macro",
            "binary_version": "1:2.4.7-1ubuntu4.22+esm13"
        },
        {
            "binary_name": "libapache2-mod-proxy-html",
            "binary_version": "1:2.4.7-1ubuntu4.22+esm13"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33007.json"
Ubuntu:Pro:16.04:LTS
apache2

Package

Name
apache2
Purl
pkg:deb/ubuntu/apache2?arch=source&distro=esm-infra-legacy%2Fxenial

Affected ranges

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

Affected versions

2.*
2.4.12-2ubuntu2
2.4.17-1ubuntu1
2.4.17-2ubuntu1
2.4.17-3ubuntu1
2.4.18-1ubuntu1
2.4.18-2ubuntu1
2.4.18-2ubuntu2
2.4.18-2ubuntu3
2.4.18-2ubuntu3.1
2.4.18-2ubuntu3.2
2.4.18-2ubuntu3.3
2.4.18-2ubuntu3.4
2.4.18-2ubuntu3.5
2.4.18-2ubuntu3.7
2.4.18-2ubuntu3.8
2.4.18-2ubuntu3.9
2.4.18-2ubuntu3.10
2.4.18-2ubuntu3.12
2.4.18-2ubuntu3.13
2.4.18-2ubuntu3.14
2.4.18-2ubuntu3.15
2.4.18-2ubuntu3.17
2.4.18-2ubuntu3.17+esm1
2.4.18-2ubuntu3.17+esm2
2.4.18-2ubuntu3.17+esm3
2.4.18-2ubuntu3.17+esm4
2.4.18-2ubuntu3.17+esm5
2.4.18-2ubuntu3.17+esm6
2.4.18-2ubuntu3.17+esm7
2.4.18-2ubuntu3.17+esm8
2.4.18-2ubuntu3.17+esm9
2.4.18-2ubuntu3.17+esm10
2.4.18-2ubuntu3.17+esm11
2.4.18-2ubuntu3.17+esm12
2.4.18-2ubuntu3.17+esm13
2.4.18-2ubuntu3.17+esm14
2.4.18-2ubuntu3.17+esm16
2.4.18-2ubuntu3.17+esm17
2.4.18-2ubuntu3.17+esm18

Ecosystem specific 

{
    "priority_reason": "Apache httpd developers have rated this to be a low-severity issue",
    "binaries": [
        {
            "binary_name": "apache2",
            "binary_version": "2.4.18-2ubuntu3.17+esm18"
        },
        {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.18-2ubuntu3.17+esm18"
        },
        {
            "binary_name": "apache2-data",
            "binary_version": "2.4.18-2ubuntu3.17+esm18"
        },
        {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.18-2ubuntu3.17+esm18"
        },
        {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.18-2ubuntu3.17+esm18"
        },
        {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.18-2ubuntu3.17+esm18"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33007.json"
Ubuntu:Pro:18.04:LTS
apache2

Package

Name
apache2
Purl
pkg:deb/ubuntu/apache2?arch=source&distro=esm-infra%2Fbionic

Affected ranges

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

Affected versions

2.*
2.4.27-2ubuntu3
2.4.29-1ubuntu1
2.4.29-1ubuntu2
2.4.29-1ubuntu3
2.4.29-1ubuntu4
2.4.29-1ubuntu4.1
2.4.29-1ubuntu4.2
2.4.29-1ubuntu4.3
2.4.29-1ubuntu4.4
2.4.29-1ubuntu4.5
2.4.29-1ubuntu4.6
2.4.29-1ubuntu4.7
2.4.29-1ubuntu4.8
2.4.29-1ubuntu4.10
2.4.29-1ubuntu4.11
2.4.29-1ubuntu4.12
2.4.29-1ubuntu4.13
2.4.29-1ubuntu4.14
2.4.29-1ubuntu4.16
2.4.29-1ubuntu4.17
2.4.29-1ubuntu4.18
2.4.29-1ubuntu4.19
2.4.29-1ubuntu4.20
2.4.29-1ubuntu4.21
2.4.29-1ubuntu4.22
2.4.29-1ubuntu4.23
2.4.29-1ubuntu4.24
2.4.29-1ubuntu4.25
2.4.29-1ubuntu4.26
2.4.29-1ubuntu4.27
2.4.29-1ubuntu4.27+esm1
2.4.29-1ubuntu4.27+esm2
2.4.29-1ubuntu4.27+esm3
2.4.29-1ubuntu4.27+esm4
2.4.29-1ubuntu4.27+esm6
2.4.29-1ubuntu4.27+esm7
2.4.29-1ubuntu4.27+esm8
2.4.29-1ubuntu4.27+esm9

Ecosystem specific 

{
    "priority_reason": "Apache httpd developers have rated this to be a low-severity issue",
    "binaries": [
        {
            "binary_name": "apache2",
            "binary_version": "2.4.29-1ubuntu4.27+esm9"
        },
        {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.29-1ubuntu4.27+esm9"
        },
        {
            "binary_name": "apache2-data",
            "binary_version": "2.4.29-1ubuntu4.27+esm9"
        },
        {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.29-1ubuntu4.27+esm9"
        },
        {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.29-1ubuntu4.27+esm9"
        },
        {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.29-1ubuntu4.27+esm9"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33007.json"
Ubuntu:Pro:20.04:LTS
apache2

Package

Name
apache2
Purl
pkg:deb/ubuntu/apache2?arch=source&distro=esm-infra%2Ffocal

Affected ranges

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

Affected versions

2.*
2.4.41-1ubuntu1
2.4.41-4ubuntu1
2.4.41-4ubuntu2
2.4.41-4ubuntu3
2.4.41-4ubuntu3.1
2.4.41-4ubuntu3.3
2.4.41-4ubuntu3.4
2.4.41-4ubuntu3.5
2.4.41-4ubuntu3.6
2.4.41-4ubuntu3.7
2.4.41-4ubuntu3.8
2.4.41-4ubuntu3.9
2.4.41-4ubuntu3.10
2.4.41-4ubuntu3.11
2.4.41-4ubuntu3.12
2.4.41-4ubuntu3.13
2.4.41-4ubuntu3.14
2.4.41-4ubuntu3.15
2.4.41-4ubuntu3.16
2.4.41-4ubuntu3.17
2.4.41-4ubuntu3.19
2.4.41-4ubuntu3.20
2.4.41-4ubuntu3.21
2.4.41-4ubuntu3.23
2.4.41-4ubuntu3.23+esm2
2.4.41-4ubuntu3.23+esm3
2.4.41-4ubuntu3.23+esm4

Ecosystem specific 

{
    "priority_reason": "Apache httpd developers have rated this to be a low-severity issue",
    "binaries": [
        {
            "binary_name": "apache2",
            "binary_version": "2.4.41-4ubuntu3.23+esm4"
        },
        {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.41-4ubuntu3.23+esm4"
        },
        {
            "binary_name": "apache2-data",
            "binary_version": "2.4.41-4ubuntu3.23+esm4"
        },
        {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.41-4ubuntu3.23+esm4"
        },
        {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.41-4ubuntu3.23+esm4"
        },
        {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.41-4ubuntu3.23+esm4"
        },
        {
            "binary_name": "libapache2-mod-md",
            "binary_version": "2.4.41-4ubuntu3.23+esm4"
        },
        {
            "binary_name": "libapache2-mod-proxy-uwsgi",
            "binary_version": "2.4.41-4ubuntu3.23+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33007.json"