🛡️ CVE-2023-0842 — xml2js

🟡 CVSS 5.3 — Medium ⚠️ Exploit Public CWE-1321 OSV
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

xml2js is vulnerable to prototype pollution

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity low, availability none.

Weakness class

CVE-2023-0842 is classified as CWE-1321: Prototype Pollution. Attacker input can modify an object prototype, changing behaviour for objects across the application.

Affected software

CVE-2023-0842 is recorded against 1 package.

  • xml2js

Timeline and source

Published on 5 April 2023 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
fluidattacks.com (Web)
github.com (Package)
lists.debian.org (Web)

CVE-2023-0842 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE CWE-1321
Public Exploit ⚠️ Yes
Source OSV
Published 2023-04-05
Updated 2026-08-12
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
xml2js — —

Similar Threats

Exploit Protection

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CVE-2023-0842 carries CVSS 5.3 Medium rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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