DEBIAN-CVE-2026-66010

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Source
https://security-tracker.debian.org/tracker/CVE-2026-66010
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-66010.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-66010
Upstream
Published
2026-07-24T13:18:28.720Z
Modified
2026-07-26T06:00:22.287577890Z
Severity
  • 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
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

Debian:12 / node-dompurify

Package

Name
node-dompurify
Purl
pkg:deb/debian/node-dompurify?arch=source&distro=bookworm

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
2.4.1+dfsg+~2.4.0-2
2.4.1+dfsg+~2.4.0-2+deb12u1
3.*
3.0.9+dfsg+~3.0.5-1
3.1.6+dfsg+~3.0.5-1
3.1.7+dfsg+~3.0.5-1
3.1.7+dfsg+~3.0.5-2
3.2.5+dfsg-1
3.3.2+dfsg-1
3.3.3+dfsg-1
3.3.3+dfsg-2
3.4.1+dfsg-1
3.4.2+dfsg-1
3.4.5+dfsg-1
3.4.12+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-66010.json"

Debian:13 / node-dompurify

Package

Name
node-dompurify
Purl
pkg:deb/debian/node-dompurify?arch=source&distro=trixie

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
3.2.5+dfsg-1
3.3.2+dfsg-1
3.3.3+dfsg-1
3.3.3+dfsg-2
3.4.1+dfsg-1
3.4.2+dfsg-1
3.4.5+dfsg-1
3.4.12+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-66010.json"

Debian:14 / node-dompurify

Package

Name
node-dompurify
Purl
pkg:deb/debian/node-dompurify?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.4.12+dfsg-1

Affected versions

3.*
3.1.7+dfsg+~3.0.5-2
3.2.5+dfsg-1
3.3.2+dfsg-1
3.3.3+dfsg-1
3.3.3+dfsg-2
3.4.1+dfsg-1
3.4.2+dfsg-1
3.4.5+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-66010.json"