DOMPurify before 3.4.13 contains a cross-site scripting vulnerability in IN_PLACE sanitization where element-removal hooks fail to neutralize detached subtrees. Attackers can supply HTML with event handlers on descendant elements that execute after sanitization completes, even though the returned root appears clean.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
cure53 DOMPurify unaffected
Version Status Constraints
0 affected < 3.4.13
3.4.13 unaffected —

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Project Subscriptions

Vendors Products
Cure53 Subscribe
Dompurify Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/cure53/DOMPurify/security/advisories/GHSA-55q2-fjhq-7xh7 cve-icon cve-icon
https://www.vulncheck.com/advisories/dompurify-before-cross-site-scripting-via-in-place-hook cve-icon cve-icon
History

Tue, 18 Aug 2026 11:30:00 +0000

Type Values Removed Values Added
Description DOMPurify before 3.4.13 contains a cross-site scripting vulnerability in IN_PLACE sanitization where element-removal hooks fail to neutralize detached subtrees. Attackers can supply HTML with event handlers on descendant elements that execute after sanitization completes, even though the returned root appears clean.
Title DOMPurify before 3.4.13 Cross-Site Scripting via IN_PLACE hook
First Time appeared Cure53
Cure53 dompurify
Weaknesses CWE-79
CPEs cpe:2.3:a:cure53:dompurify:*:*:*:*:*:*:*:*
Vendors & Products Cure53
Cure53 dompurify
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-18T13:38:34.515Z

Reserved: 2026-08-18T10:59:33.701Z

Link: CVE-2026-75838

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-18T12:19:34.050

Modified: 2026-08-18T12:19:34.050

Link: CVE-2026-75838

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-18T13:00:06Z

Weaknesses