UBUNTU-CVE-2026-67216

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Source
https://ubuntu.com/security/CVE-2026-67216
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-67216
Upstream
Published
2026-07-29T14:16:00Z
Modified
2026-08-06T03:11:24Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

cJSON through 1.7.19 contains an inefficient algorithmic complexity flaw in cJSON_Compare(). When comparing objects, the function recurses into each shared subtree twice, once in each direction, with no depth guard, making the running time exponential in nesting depth. A small, deeply nested document of a few hundred bytes (depth around 40) compared for equality consumes hours of CPU, and the cost roughly doubles with each additional level of nesting. An application that calls cJSON_Compare() on attacker-influenced JSON that is structurally equal to a reference document is exposed to a denial-of-service condition.

References

Affected packages

Ubuntu:16.04:LTS
mapcache

Package

Name
mapcache
Purl
pkg:deb/ubuntu/mapcache?arch=source&distro=xenial

Affected ranges

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

Affected versions

1.*
1.4.0-3
1.4.0-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache2-mod-mapcache",
            "binary_version": "1.4.0-4"
        },
        {
            "binary_name": "libmapcache1",
            "binary_version": "1.4.0-4"
        },
        {
            "binary_name": "mapcache-cgi",
            "binary_version": "1.4.0-4"
        },
        {
            "binary_name": "mapcache-tools",
            "binary_version": "1.4.0-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
Ubuntu:18.04:LTS
mapcache

Package

Name
mapcache
Purl
pkg:deb/ubuntu/mapcache?arch=source&distro=bionic

Affected ranges

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

Affected versions

1.*
1.6.0-2
1.6.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache2-mod-mapcache",
            "binary_version": "1.6.1-1"
        },
        {
            "binary_name": "libmapcache1",
            "binary_version": "1.6.1-1"
        },
        {
            "binary_name": "mapcache-cgi",
            "binary_version": "1.6.1-1"
        },
        {
            "binary_name": "mapcache-tools",
            "binary_version": "1.6.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
Ubuntu:20.04:LTS
mapcache

Package

Name
mapcache
Purl
pkg:deb/ubuntu/mapcache?arch=source&distro=focal

Affected ranges

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

Affected versions

1.*
1.8.0-1
1.8.0-1build2
1.10.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache2-mod-mapcache",
            "binary_version": "1.10.0-1"
        },
        {
            "binary_name": "libmapcache1",
            "binary_version": "1.10.0-1"
        },
        {
            "binary_name": "mapcache-cgi",
            "binary_version": "1.10.0-1"
        },
        {
            "binary_name": "mapcache-tools",
            "binary_version": "1.10.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
Ubuntu:22.04:LTS
mapcache

Package

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

Affected ranges

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

Affected versions

1.*
1.10.0-2build1
1.10.0-2build3
1.12.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache2-mod-mapcache",
            "binary_version": "1.12.0-1"
        },
        {
            "binary_name": "libmapcache1",
            "binary_version": "1.12.0-1"
        },
        {
            "binary_name": "mapcache-cgi",
            "binary_version": "1.12.0-1"
        },
        {
            "binary_name": "mapcache-tools",
            "binary_version": "1.12.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
Ubuntu:24.04:LTS
mapcache

Package

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

Affected ranges

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

Affected versions

1.*
1.14.0-2
1.14.0-2build1
1.14.0-2build2
1.14.0-4build1
1.14.0-4build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache2-mod-mapcache",
            "binary_version": "1.14.0-4build2"
        },
        {
            "binary_name": "libmapcache1t64",
            "binary_version": "1.14.0-4build2"
        },
        {
            "binary_name": "mapcache-cgi",
            "binary_version": "1.14.0-4build2"
        },
        {
            "binary_name": "mapcache-tools",
            "binary_version": "1.14.0-4build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
Ubuntu:26.04:LTS
cjson

Package

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

Affected ranges

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

Affected versions

1.*
1.7.18-3.1
1.7.18-4
1.7.19-1
1.7.19-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcjson1",
            "binary_version": "1.7.19-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
iperf3

Package

Name
iperf3
Purl
pkg:deb/ubuntu/iperf3?arch=source&distro=resolute

Affected ranges

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

Affected versions

3.*
3.18-2
3.19.1-2
3.20-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "iperf3",
            "binary_version": "3.20-2"
        },
        {
            "binary_name": "libiperf0",
            "binary_version": "3.20-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
mapcache

Package

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

Affected ranges

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

Affected versions

1.*
1.14.1-3
1.14.1-3build1
1.14.1-3build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache2-mod-mapcache",
            "binary_version": "1.14.1-3build2"
        },
        {
            "binary_name": "libmapcache1t64",
            "binary_version": "1.14.1-3build2"
        },
        {
            "binary_name": "mapcache-cgi",
            "binary_version": "1.14.1-3build2"
        },
        {
            "binary_name": "mapcache-tools",
            "binary_version": "1.14.1-3build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
sail-ocaml

Package

Name
sail-ocaml
Purl
pkg:deb/ubuntu/sail-ocaml?arch=source&distro=resolute

Affected ranges

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

Affected versions

0.*
0.19.1+dfsg5-1
0.19.1+dfsg5-1build2
0.19.1+dfsg5-1build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "sail-ocaml",
            "binary_version": "0.19.1+dfsg5-1build3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
Ubuntu:Pro:16.04:LTS
iperf3

Package

Name
iperf3
Purl
pkg:deb/ubuntu/iperf3?arch=source&distro=esm-apps%2Fxenial

Affected ranges

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

Affected versions

3.*
3.0.11-1
3.0.11-1ubuntu0.1~esm1
3.0.11-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "iperf3",
            "binary_version": "3.0.11-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "libiperf0",
            "binary_version": "3.0.11-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
Ubuntu:Pro:18.04:LTS
iperf3

Package

Name
iperf3
Purl
pkg:deb/ubuntu/iperf3?arch=source&distro=esm-apps%2Fbionic

Affected ranges

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

Affected versions

3.*
3.1.3-1
3.1.3-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "iperf3",
            "binary_version": "3.1.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libiperf0",
            "binary_version": "3.1.3-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
Ubuntu:Pro:20.04:LTS
cjson

Package

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

Affected ranges

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

Affected versions

1.*
1.7.10-1.1
1.7.10-1.1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcjson1",
            "binary_version": "1.7.10-1.1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
iperf3

Package

Name
iperf3
Purl
pkg:deb/ubuntu/iperf3?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

3.*
3.6-2
3.7-1
3.7-2
3.7-3
3.7-3ubuntu0.1~esm1
3.7-3ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "iperf3",
            "binary_version": "3.7-3ubuntu0.1~esm2"
        },
        {
            "binary_name": "libiperf0",
            "binary_version": "3.7-3ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
Ubuntu:Pro:22.04:LTS
cjson

Package

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

Affected ranges

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

Affected versions

1.*
1.7.14-1
1.7.15-1
1.7.15-1ubuntu0.1~esm2
1.7.15-1ubuntu0.1
1.7.15-1ubuntu0.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcjson1",
            "binary_version": "1.7.15-1ubuntu0.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
iperf3

Package

Name
iperf3
Purl
pkg:deb/ubuntu/iperf3?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

3.*
3.9-1
3.9-1build1
3.9-1+deb11u1build0.22.04.1
3.9-1+deb11u1ubuntu0.1~esm1
3.9-1+deb11u1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "iperf3",
            "binary_version": "3.9-1+deb11u1ubuntu0.1"
        },
        {
            "binary_name": "libiperf0",
            "binary_version": "3.9-1+deb11u1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
Ubuntu:Pro:24.04:LTS
cjson

Package

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

Affected ranges

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

Affected versions

1.*
1.7.16-1
1.7.16-2
1.7.17-1
1.7.17-1ubuntu0.1~esm2
1.7.17-1ubuntu0.1~esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcjson1",
            "binary_version": "1.7.17-1ubuntu0.1~esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"
iperf3

Package

Name
iperf3
Purl
pkg:deb/ubuntu/iperf3?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

3.*
3.14-1
3.15-1
3.16-1
3.16-1build1
3.16-1build2
3.16-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "iperf3",
            "binary_version": "3.16-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libiperf0",
            "binary_version": "3.16-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67216.json"