How severe is CVE-2023-0842?

CVE-2023-0842 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2023-0842 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-0842?

CVE-2023-0842 affects Xml2js Project Xml2js. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-0842?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-0842 published?

CVE-2023-0842 was published on 2023-04-05 and last updated on 2026-06-17.

CVE-2023-0842

CVE-2023-0842 is a medium-severity vulnerability in Xml2js Project Xml2js with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1321.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Xml2js Project Xml2js
Published: 2023-04-05
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-0842?: 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.
How severe is CVE-2023-0842?: CVE-2023-0842 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2023-0842 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-0842?: CVE-2023-0842 affects Xml2js Project Xml2js. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-0842?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-0842 published?: CVE-2023-0842 was published on 2023-04-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:xml2js_project:xml2js:0.4.23:*:*:*:*:*:*:*

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