CVE-2026-47423
DOMPurify XSS via `selectedcontent` re-clone
Description
DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside <selectedcontent> is returned. This issue is fixed in version 3.4.5.
INFO
Published Date :
July 14, 2026, 8:17 p.m.
Last Modified :
July 21, 2026, 7:50 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update DOMPurify to version 3.4.5.
Public PoC/Exploit Available at Github
CVE-2026-47423 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-47423.
| URL | Resource |
|---|---|
| https://github.com/cure53/DOMPurify/commit/011b0c78f2a0f57ee54f5fcccb697a46ca6e63ea | Patch |
| https://github.com/cure53/DOMPurify/releases/tag/3.4.5 | Release Notes |
| https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx | Exploit Vendor Advisory |
| https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-47423 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-47423
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-47423 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-47423 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 21, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:cure53:dompurify:3.4.4:*:*:*:*:*:*:* Added Reference Type GitHub, Inc.: https://github.com/cure53/DOMPurify/commit/011b0c78f2a0f57ee54f5fcccb697a46ca6e63ea Types: Patch Added Reference Type GitHub, Inc.: https://github.com/cure53/DOMPurify/releases/tag/3.4.5 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx Types: Exploit, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 16, 2026
Action Type Old Value New Value Added Reference https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx Added SSVC {'id': 'CVE-2026-47423', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-16T14:46:50.385097Z'} -
New CVE Received by [email protected]
Jul. 14, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'cure53', 'product': 'DOMPurify', 'versions': [{'status': 'affected', 'version': '>= 3.4.4, < 3.4.5'}]}] Added Description DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside <selectedcontent> is returned. This issue is fixed in version 3.4.5. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N Added CWE CWE-79 Added Reference https://github.com/cure53/DOMPurify/commit/011b0c78f2a0f57ee54f5fcccb697a46ca6e63ea Added Reference https://github.com/cure53/DOMPurify/releases/tag/3.4.5 Added Reference https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx