UBUNTU-CVE-2026-9358

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Source

https://ubuntu.com/security/CVE-2026-9358

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9358.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-9358

Upstream

CVE-2026-9358

Published

2026-05-24T06:16:00Z

Modified

2026-06-24T11:00:55.128561885Z

Severity

4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L CVSS Calculator
2.1 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

A vulnerability was determined in postcss-selector-parser up to 6.1.2/7.1.2. Affected is the function toString of the file src/selectors/container.js of the component AST Serialization. Executing a manipulation can lead to uncontrolled recursion. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version 6.1.3 and 7.1.3 is able to address this issue. This patch is called 5bc698cef66f8abd12610dc623e5d67cbc0f869d. It is suggested to upgrade the affected component. The vendor explains, that according to his definition "DoS on server-side on user-generated CSS is low risk for us (since most users compile own CSS with PostCSS)." The commits were backported to 6.x branch, which was the most downloaded version.

References

Affected packages

Ubuntu:20.04:LTS / node-css-loader

Package

Name: node-css-loader
Purl: pkg:deb/ubuntu/node-css-loader?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.0.1-1

1.0.1+repack-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "node-css-loader",
            "binary_version": "1.0.1+repack-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9358.json"

Ubuntu:22.04:LTS / node-css-loader

Package

Name: node-css-loader
Purl: pkg:deb/ubuntu/node-css-loader?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.0.1+~cs14.0.5-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "node-css-loader",
            "binary_version": "5.0.1+~cs14.0.5-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9358.json"

Ubuntu:24.04:LTS / node-css-loader

Package

Name: node-css-loader
Purl: pkg:deb/ubuntu/node-css-loader?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

6.*

6.7.2+~cs14.0.11-1

6.8.1+~cs14.0.17-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "node-css-loader",
            "binary_version": "6.8.1+~cs14.0.17-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9358.json"

Ubuntu:25.10 / node-css-loader

Package

Name: node-css-loader
Purl: pkg:deb/ubuntu/node-css-loader?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

6.*

6.8.1+~cs14.0.17-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "node-css-loader",
            "binary_version": "6.8.1+~cs14.0.17-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9358.json"

Ubuntu:26.04:LTS / node-css-loader

Package

Name: node-css-loader
Purl: pkg:deb/ubuntu/node-css-loader?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

6.*

6.8.1+~cs14.0.17-1

6.8.1+~cs14.0.17-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "node-css-loader",
            "binary_version": "6.8.1+~cs14.0.17-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9358.json"