UBUNTU-CVE-2026-4539

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Source
https://ubuntu.com/security/CVE-2026-4539
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4539.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-4539
Upstream
  • CVE-2026-4539
Published
2026-03-22T06:16:00Z
Modified
2026-03-27T17:20:00.440444Z
Severity
  • 3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • 1.9 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

A security flaw has been discovered in pygments up to 2.19.2. The impacted element is the function AdlLexer of the file pygments/lexers/archetype.py. The manipulation results in inefficient regular expression complexity. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

References

Affected packages

Ubuntu:16.04:LTS
pygments

Package

Name
pygments
Purl
pkg:deb/ubuntu/pygments@2.1+dfsg-1ubuntu0.2?arch=source&distro=xenial

Affected ranges

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

Affected versions

2.*
2.0.1+dfsg-1.1svn1
2.0.1+dfsg-1.1ubuntu1
2.1+dfsg-1
2.1+dfsg-1ubuntu0.1
2.1+dfsg-1ubuntu0.2

Ecosystem specific 

{
    "priority_reason": "Upstream considers this a low severity issue with limited impact",
    "binaries": [
        {
            "binary_name": "python-pygments",
            "binary_version": "2.1+dfsg-1ubuntu0.2"
        },
        {
            "binary_name": "python3-pygments",
            "binary_version": "2.1+dfsg-1ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4539.json"
Ubuntu:18.04:LTS
pygments

Package

Name
pygments
Purl
pkg:deb/ubuntu/pygments@2.2.0+dfsg-1ubuntu0.2?arch=source&distro=bionic

Affected ranges

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

Affected versions

2.*
2.2.0+dfsg-1
2.2.0+dfsg-1ubuntu0.1
2.2.0+dfsg-1ubuntu0.2

Ecosystem specific 

{
    "priority_reason": "Upstream considers this a low severity issue with limited impact",
    "binaries": [
        {
            "binary_name": "python-pygments",
            "binary_version": "2.2.0+dfsg-1ubuntu0.2"
        },
        {
            "binary_name": "python3-pygments",
            "binary_version": "2.2.0+dfsg-1ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4539.json"
Ubuntu:20.04:LTS
pygments

Package

Name
pygments
Purl
pkg:deb/ubuntu/pygments@2.3.1+dfsg-1ubuntu2.2?arch=source&distro=focal

Affected ranges

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

Affected versions

2.*
2.3.1+dfsg-1ubuntu1
2.3.1+dfsg-1ubuntu2
2.3.1+dfsg-1ubuntu2.1
2.3.1+dfsg-1ubuntu2.2

Ecosystem specific 

{
    "priority_reason": "Upstream considers this a low severity issue with limited impact",
    "binaries": [
        {
            "binary_name": "python-pygments",
            "binary_version": "2.3.1+dfsg-1ubuntu2.2"
        },
        {
            "binary_name": "python3-pygments",
            "binary_version": "2.3.1+dfsg-1ubuntu2.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4539.json"
Ubuntu:22.04:LTS
pygments

Package

Name
pygments
Purl
pkg:deb/ubuntu/pygments@2.11.2+dfsg-2ubuntu0.1?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*
2.7.1+dfsg-2.1
2.10.0+dfsg-1
2.11.2+dfsg-2
2.11.2+dfsg-2ubuntu0.1

Ecosystem specific 

{
    "priority_reason": "Upstream considers this a low severity issue with limited impact",
    "binaries": [
        {
            "binary_name": "python3-pygments",
            "binary_version": "2.11.2+dfsg-2ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4539.json"
Ubuntu:24.04:LTS
pygments

Package

Name
pygments
Purl
pkg:deb/ubuntu/pygments@2.17.2+dfsg-1?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*
2.15.1+dfsg-1
2.17.2+dfsg-1

Ecosystem specific 

{
    "priority_reason": "Upstream considers this a low severity issue with limited impact",
    "binaries": [
        {
            "binary_name": "python3-pygments",
            "binary_version": "2.17.2+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4539.json"
Ubuntu:25.10
pygments

Package

Name
pygments
Purl
pkg:deb/ubuntu/pygments@2.18.0+dfsg-2?arch=source&distro=questing

Affected ranges

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

Affected versions

2.*
2.18.0+dfsg-2

Ecosystem specific 

{
    "priority_reason": "Upstream considers this a low severity issue with limited impact",
    "binaries": [
        {
            "binary_name": "python3-pygments",
            "binary_version": "2.18.0+dfsg-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4539.json"
Ubuntu:Pro:14.04:LTS
pygments

Package

Name
pygments
Purl
pkg:deb/ubuntu/pygments@1.6+dfsg-1ubuntu1.1+esm1?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

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

Affected versions

1.*
1.6+dfsg-1
1.6+dfsg-1build1
1.6+dfsg-1ubuntu1
1.6+dfsg-1ubuntu1.1
1.6+dfsg-1ubuntu1.1+esm1

Ecosystem specific 

{
    "priority_reason": "Upstream considers this a low severity issue with limited impact",
    "binaries": [
        {
            "binary_name": "python-pygments",
            "binary_version": "1.6+dfsg-1ubuntu1.1+esm1"
        },
        {
            "binary_name": "python3-pygments",
            "binary_version": "1.6+dfsg-1ubuntu1.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4539.json"