UBUNTU-CVE-2026-66010

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Source
https://ubuntu.com/security/CVE-2026-66010
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-66010.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-66010
Upstream
Published
2026-07-27T00:00:00Z
Modified
2026-07-27T16:31:53.013031261Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
  • 5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOMELEMENTHANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into innerHTML sinks, creating second-order XSS gadgets.

References

Affected packages

Ubuntu:22.04:LTS / node-dompurify

Package

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

Affected ranges

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

Affected versions

2.*
2.3.0+dfsg-2
2.3.3+dfsg-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.3.3+dfsg-1",
            "binary_name": "node-dompurify"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-66010.json"

Ubuntu:24.04:LTS / node-dompurify

Package

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

Affected ranges

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

Affected versions

2.*
2.4.1+dfsg+~2.4.0-1
3.*
3.0.9+dfsg+~3.0.5-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.0.9+dfsg+~3.0.5-1",
            "binary_name": "node-dompurify"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-66010.json"

Ubuntu:26.04:LTS / node-dompurify

Package

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

Affected ranges

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

Affected versions

3.*
3.1.7+dfsg+~3.0.5-2
3.3.3+dfsg-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.3.3+dfsg-1",
            "binary_name": "node-dompurify"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-66010.json"