CVE Vulnerabilities

CVE-2023-0842

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Published: Apr 05, 2023 | Modified: Sep 24, 2025
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.x
RedHat/V2
RedHat/V3
5.3 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Ubuntu
MEDIUM
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xml2js version 0.4.23 allows an external attacker to edit or add new properties to an object. This is possible because the application does not properly validate incoming JSON keys, thus allowing the proto property to be edited.

Weakness

The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.

Affected Software

NameVendorStart VersionEnd Version
Xml2jsXml2js_project0.4.23 (including)0.4.23 (including)
Node-xml2jsUbuntubionic*
Node-xml2jsUbuntufocal*
Node-xml2jsUbuntukinetic*
Node-xml2jsUbuntulunar*
Node-xml2jsUbuntumantic*
Node-xml2jsUbuntuoracular*
Node-xml2jsUbuntuplucky*
Node-xml2jsUbuntutrusty*
Node-xml2jsUbuntuxenial*

Potential Mitigations

References