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xml2js is vulnerable to prototype pollution

Moderate severity GitHub Reviewed Published Apr 5, 2023 to the GitHub Advisory Database • Updated Mar 14, 2024

Package

npm xml2js (npm)

Affected versions

< 0.5.0

Patched versions

0.5.0

Description

xml2js versions before 0.5.0 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.

References

Published by the National Vulnerability Database Apr 5, 2023
Published to the GitHub Advisory Database Apr 5, 2023
Reviewed Apr 7, 2023
Last updated Mar 14, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS score

0.104%
(44th percentile)

Weaknesses

CVE ID

CVE-2023-0842

GHSA ID

GHSA-776f-qx25-q3cc

Source code

Credits

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