UBUNTU-CVE-2026-33947

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Source
https://ubuntu.com/security/CVE-2026-33947
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33947.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-33947
Upstream
  • CVE-2026-33947
Downstream
Related
Published
2026-04-13T22:16:00Z
Modified
2026-05-20T16:25:31.561566102Z
Severity
  • 6.2 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

jq is a command-line JSON processor. In versions 1.8.1 and below, functions jvsetpath(), jvgetpath(), and delpathssorted() in jq's src/jvaux.c use unbounded recursion whose depth is controlled by the length of a caller-supplied path array, with no depth limit enforced. An attacker can supply a JSON document containing a flat array of ~65,000 integers (~200 KB) that, when used as a path argument by a trusted jq filter, exhausts the C call stack and crashes the process with a segmentation fault (SIGSEGV). This bypass works because the existing MAXPARSINGDEPTH (10,000) limit only protects the JSON parser, not runtime path operations where arrays can be programmatically constructed to arbitrary lengths. The impact is denial of service (unrecoverable crash) affecting any application or service that processes untrusted JSON input through jq's setpath, getpath, or delpaths builtins. This issue has been addressed in commit fb59f1491058d58bdc3e8dd28f1773d1ac690a1f.

References

Affected packages

Ubuntu:22.04:LTS
jq

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6-2.1ubuntu3.2

Affected versions

1.*
1.6-2.1ubuntu2
1.6-2.1ubuntu3
1.6-2.1ubuntu3.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "jq",
            "binary_version": "1.6-2.1ubuntu3.2"
        },
        {
            "binary_name": "libjq1",
            "binary_version": "1.6-2.1ubuntu3.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33947.json"
Ubuntu:24.04:LTS
jq

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.7.1-3ubuntu0.24.04.2

Affected versions

1.*
1.6-3
1.7-1
1.7.1-2
1.7.1-3
1.7.1-3build1
1.7.1-3ubuntu0.24.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "jq",
            "binary_version": "1.7.1-3ubuntu0.24.04.2"
        },
        {
            "binary_name": "libjq1",
            "binary_version": "1.7.1-3ubuntu0.24.04.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33947.json"
Ubuntu:25.10
jq

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.1-3ubuntu1.1

Affected versions

1.*
1.7.1-3ubuntu1
1.7.1-6ubuntu1
1.8.1-3ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "jq",
            "binary_version": "1.8.1-3ubuntu1.1"
        },
        {
            "binary_name": "libjq1",
            "binary_version": "1.8.1-3ubuntu1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33947.json"
Ubuntu:26.04:LTS
jq

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.1-4ubuntu2

Affected versions

1.*
1.8.1-3ubuntu1
1.8.1-4ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "jq",
            "binary_version": "1.8.1-4ubuntu2"
        },
        {
            "binary_name": "libjq1",
            "binary_version": "1.8.1-4ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33947.json"
Ubuntu:Pro:14.04:LTS
jq

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.3-1.1ubuntu1.1+esm4

Affected versions

1.*
1.2-8
1.3-1
1.3-1.1ubuntu1
1.3-1.1ubuntu1.1
1.3-1.1ubuntu1.1+esm3

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "jq",
            "binary_version": "1.3-1.1ubuntu1.1+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33947.json"
Ubuntu:Pro:16.04:LTS
jq

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.5+dfsg-1ubuntu0.1+esm4

Affected versions

1.*
1.4-2.1
1.5+dfsg-1
1.5+dfsg-1ubuntu0.1
1.5+dfsg-1ubuntu0.1+esm2
1.5+dfsg-1ubuntu0.1+esm3

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "jq",
            "binary_version": "1.5+dfsg-1ubuntu0.1+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33947.json"
Ubuntu:Pro:18.04:LTS
jq

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.5+dfsg-2ubuntu0.1~esm2

Affected versions

1.*
1.5+dfsg-2
1.5+dfsg-2ubuntu0.1~esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "jq",
            "binary_version": "1.5+dfsg-2ubuntu0.1~esm2"
        },
        {
            "binary_name": "libjq1",
            "binary_version": "1.5+dfsg-2ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33947.json"
Ubuntu:Pro:20.04:LTS
jq

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6-1ubuntu0.20.04.1+esm2

Affected versions

1.*
1.5+dfsg-2build1
1.6-1
1.6-1ubuntu0.20.04.1
1.6-1ubuntu0.20.04.1+esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "jq",
            "binary_version": "1.6-1ubuntu0.20.04.1+esm2"
        },
        {
            "binary_name": "libjq1",
            "binary_version": "1.6-1ubuntu0.20.04.1+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33947.json"