UBUNTU-CVE-2026-42528

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Source

https://ubuntu.com/security/CVE-2026-42528

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42528.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-42528

Upstream

CVE-2026-42528

Published

2026-10-02T00:00:00Z

Modified

2026-10-02T22:30:17Z

Severity

4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

A memory calculation bug in mod_dav in Apache httpd 2.4.67 and earlier allows an attacker with permission to create WebDAV locks to crash server child processes. Users are recommended to upgrade to version 2.4.69, 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

0 Unknown introduced version / All previous versions are affected

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

2.4.52-1ubuntu4.20

2.4.52-1ubuntu4.21

2.4.52-1ubuntu4.23

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "apache2",
            "binary_version":  "2.4.52-1ubuntu4.23"
        },
        {
            "binary_name":  "apache2-bin",
            "binary_version":  "2.4.52-1ubuntu4.23"
        },
        {
            "binary_name":  "apache2-data",
            "binary_version":  "2.4.52-1ubuntu4.23"
        },
        {
            "binary_name":  "apache2-suexec-custom",
            "binary_version":  "2.4.52-1ubuntu4.23"
        },
        {
            "binary_name":  "apache2-suexec-pristine",
            "binary_version":  "2.4.52-1ubuntu4.23"
        },
        {
            "binary_name":  "apache2-utils",
            "binary_version":  "2.4.52-1ubuntu4.23"
        },
        {
            "binary_name":  "libapache2-mod-md",
            "binary_version":  "2.4.52-1ubuntu4.23"
        },
        {
            "binary_name":  "libapache2-mod-proxy-uwsgi",
            "binary_version":  "2.4.52-1ubuntu4.23"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42528.json"

Ubuntu:24.04:LTS

apache2

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

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

2.4.58-1ubuntu8.12

2.4.58-1ubuntu8.13

2.4.58-1ubuntu8.15

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "apache2",
            "binary_version":  "2.4.58-1ubuntu8.15"
        },
        {
            "binary_name":  "apache2-bin",
            "binary_version":  "2.4.58-1ubuntu8.15"
        },
        {
            "binary_name":  "apache2-data",
            "binary_version":  "2.4.58-1ubuntu8.15"
        },
        {
            "binary_name":  "apache2-suexec-custom",
            "binary_version":  "2.4.58-1ubuntu8.15"
        },
        {
            "binary_name":  "apache2-suexec-pristine",
            "binary_version":  "2.4.58-1ubuntu8.15"
        },
        {
            "binary_name":  "apache2-utils",
            "binary_version":  "2.4.58-1ubuntu8.15"
        },
        {
            "binary_name":  "libapache2-mod-md",
            "binary_version":  "2.4.58-1ubuntu8.15"
        },
        {
            "binary_name":  "libapache2-mod-proxy-uwsgi",
            "binary_version":  "2.4.58-1ubuntu8.15"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42528.json"

Ubuntu:26.04:LTS

apache2

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.4.64-1ubuntu3

2.4.65-3ubuntu1

2.4.66-2ubuntu1

2.4.66-2ubuntu2

2.4.66-2ubuntu2.1

2.4.66-2ubuntu2.2

2.4.66-2ubuntu2.4

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "apache2",
            "binary_version":  "2.4.66-2ubuntu2.4"
        },
        {
            "binary_name":  "apache2-bin",
            "binary_version":  "2.4.66-2ubuntu2.4"
        },
        {
            "binary_name":  "apache2-data",
            "binary_version":  "2.4.66-2ubuntu2.4"
        },
        {
            "binary_name":  "apache2-suexec-custom",
            "binary_version":  "2.4.66-2ubuntu2.4"
        },
        {
            "binary_name":  "apache2-suexec-pristine",
            "binary_version":  "2.4.66-2ubuntu2.4"
        },
        {
            "binary_name":  "apache2-utils",
            "binary_version":  "2.4.66-2ubuntu2.4"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42528.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

0 Unknown 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

2.4.7-1ubuntu4.22+esm14

2.4.7-1ubuntu4.22+esm15

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "apache2",
            "binary_version":  "2.4.7-1ubuntu4.22+esm15"
        },
        {
            "binary_name":  "apache2-bin",
            "binary_version":  "2.4.7-1ubuntu4.22+esm15"
        },
        {
            "binary_name":  "apache2-data",
            "binary_version":  "2.4.7-1ubuntu4.22+esm15"
        },
        {
            "binary_name":  "apache2-mpm-event",
            "binary_version":  "2.4.7-1ubuntu4.22+esm15"
        },
        {
            "binary_name":  "apache2-mpm-itk",
            "binary_version":  "2.4.7-1ubuntu4.22+esm15"
        },
        {
            "binary_name":  "apache2-mpm-prefork",
            "binary_version":  "2.4.7-1ubuntu4.22+esm15"
        },
        {
            "binary_name":  "apache2-mpm-worker",
            "binary_version":  "2.4.7-1ubuntu4.22+esm15"
        },
        {
            "binary_name":  "apache2-suexec",
            "binary_version":  "2.4.7-1ubuntu4.22+esm15"
        },
        {
            "binary_name":  "apache2-suexec-custom",
            "binary_version":  "2.4.7-1ubuntu4.22+esm15"
        },
        {
            "binary_name":  "apache2-suexec-pristine",
            "binary_version":  "2.4.7-1ubuntu4.22+esm15"
        },
        {
            "binary_name":  "apache2-utils",
            "binary_version":  "2.4.7-1ubuntu4.22+esm15"
        },
        {
            "binary_name":  "apache2.2-bin",
            "binary_version":  "2.4.7-1ubuntu4.22+esm15"
        },
        {
            "binary_name":  "libapache2-mod-macro",
            "binary_version":  "1:2.4.7-1ubuntu4.22+esm15"
        },
        {
            "binary_name":  "libapache2-mod-proxy-html",
            "binary_version":  "1:2.4.7-1ubuntu4.22+esm15"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42528.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

0 Unknown 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

2.4.18-2ubuntu3.17+esm19

2.4.18-2ubuntu3.17+esm20

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "apache2",
            "binary_version":  "2.4.18-2ubuntu3.17+esm20"
        },
        {
            "binary_name":  "apache2-bin",
            "binary_version":  "2.4.18-2ubuntu3.17+esm20"
        },
        {
            "binary_name":  "apache2-data",
            "binary_version":  "2.4.18-2ubuntu3.17+esm20"
        },
        {
            "binary_name":  "apache2-suexec-custom",
            "binary_version":  "2.4.18-2ubuntu3.17+esm20"
        },
        {
            "binary_name":  "apache2-suexec-pristine",
            "binary_version":  "2.4.18-2ubuntu3.17+esm20"
        },
        {
            "binary_name":  "apache2-utils",
            "binary_version":  "2.4.18-2ubuntu3.17+esm20"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42528.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

0 Unknown 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

2.4.29-1ubuntu4.27+esm10

2.4.29-1ubuntu4.27+esm11

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "apache2",
            "binary_version":  "2.4.29-1ubuntu4.27+esm11"
        },
        {
            "binary_name":  "apache2-bin",
            "binary_version":  "2.4.29-1ubuntu4.27+esm11"
        },
        {
            "binary_name":  "apache2-data",
            "binary_version":  "2.4.29-1ubuntu4.27+esm11"
        },
        {
            "binary_name":  "apache2-suexec-custom",
            "binary_version":  "2.4.29-1ubuntu4.27+esm11"
        },
        {
            "binary_name":  "apache2-suexec-pristine",
            "binary_version":  "2.4.29-1ubuntu4.27+esm11"
        },
        {
            "binary_name":  "apache2-utils",
            "binary_version":  "2.4.29-1ubuntu4.27+esm11"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42528.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

0 Unknown 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

2.4.41-4ubuntu3.23+esm5

2.4.41-4ubuntu3.23+esm6

2.4.41-4ubuntu3.23+esm7

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "apache2",
            "binary_version":  "2.4.41-4ubuntu3.23+esm7"
        },
        {
            "binary_name":  "apache2-bin",
            "binary_version":  "2.4.41-4ubuntu3.23+esm7"
        },
        {
            "binary_name":  "apache2-data",
            "binary_version":  "2.4.41-4ubuntu3.23+esm7"
        },
        {
            "binary_name":  "apache2-suexec-custom",
            "binary_version":  "2.4.41-4ubuntu3.23+esm7"
        },
        {
            "binary_name":  "apache2-suexec-pristine",
            "binary_version":  "2.4.41-4ubuntu3.23+esm7"
        },
        {
            "binary_name":  "apache2-utils",
            "binary_version":  "2.4.41-4ubuntu3.23+esm7"
        },
        {
            "binary_name":  "libapache2-mod-md",
            "binary_version":  "2.4.41-4ubuntu3.23+esm7"
        },
        {
            "binary_name":  "libapache2-mod-proxy-uwsgi",
            "binary_version":  "2.4.41-4ubuntu3.23+esm7"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42528.json"