UBUNTU-CVE-2026-126192

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Source
https://ubuntu.com/security/CVE-2026-126192
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126192.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-126192
Upstream
Published
2026-11-13T00:00:00Z
Modified
2026-11-13T21:05:39Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.10, matching a developer-authored selector that places the general sibling combinator inside :has() repeatedly scans each candidate element's following siblings when the right-hand side is absent, producing quadratic work on attacker-controlled HTML. Applications that evaluate a fixed selector such as div:has(a ~ b) over untrusted markup can have a worker occupied for minutes by a small document, while the adjacent sibling form and trusted-only document processing are not affected in the same way. This issue is fixed in version 2.10.

References

Affected packages

Ubuntu:20.04:LTS / soupsieve

Package

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

Affected ranges

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

Affected versions

1.*
1.9.2+dfsg-2ubuntu1
1.9.4+dfsg-1
1.9.5+dfsg-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-soupsieve",
            "binary_version": "1.9.5+dfsg-1"
        },
        {
            "binary_name": "python3-soupsieve",
            "binary_version": "1.9.5+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126192.json"

Ubuntu:22.04:LTS / soupsieve

Package

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

Affected ranges

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

Affected versions

2.*
2.2.1-2
2.3-1
2.3.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-soupsieve",
            "binary_version": "2.3.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126192.json"

Ubuntu:24.04:LTS / soupsieve

Package

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

Affected ranges

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

Affected versions

2.*
2.4.1-2
2.5-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-soupsieve",
            "binary_version": "2.5-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126192.json"

Ubuntu:26.10 / soupsieve

Package

Name
soupsieve
Purl
pkg:deb/ubuntu/soupsieve?arch=source&distro=stonking

Affected ranges

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

Affected versions

2.*
2.8.3-1
2.8.4-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-soupsieve",
            "binary_version": "2.8.4-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126192.json"

Ubuntu:26.04:LTS / soupsieve

Package

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

Affected ranges

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

Affected versions

2.*
2.7-2
2.8.1-1
2.8.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-soupsieve",
            "binary_version": "2.8.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-126192.json"