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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-21366 Detail

Description

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom versions 0.4.0 and older do not correctly preserve system identifiers, FPIs or namespaces when repeatedly parsing and serializing maliciously crafted documents. This may lead to unexpected syntactic changes during XML processing in some downstream applications. This is fixed in version 0.5.0. As a workaround downstream applications can validate the input and reject the maliciously crafted documents.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/xmldom/xmldom/commit/d4201b9dfbf760049f457f9f08a3888d48835135 CVE, GitHub, Inc. Patch 
https://github.com/xmldom/xmldom/releases/tag/0.5.0 CVE, GitHub, Inc. Release Notes 
https://github.com/xmldom/xmldom/security/advisories/GHSA-h6q6-9hqw-rwfv CVE, GitHub, Inc. Vendor Advisory 
https://lists.debian.org/debian-lts-announce/2023/01/msg00000.html CVE, GitHub, Inc. Mailing List  Third Party Advisory 
https://www.npmjs.com/package/xmldom CVE, GitHub, Inc. Product 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-436 Interpretation Conflict cwe source acceptance level NIST   GitHub, Inc.  
CWE-115 Misinterpretation of Input GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-21366
NVD Published Date:
03/12/2021
NVD Last Modified:
06/16/2026
Source:
GitHub, Inc.