How severe is CVE-2023-39685?

CVE-2023-39685 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-39685 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39685?

CVE-2023-39685 affects Hjson. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-39685?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-39685 published?

CVE-2023-39685 was published on 2023-09-01 and last updated on 2026-06-17.

CVE-2023-39685

CVE-2023-39685 is a high-severity vulnerability in Hjson with a CVSS 3.x base score of 7.5. 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-94.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Hjson
Published: 2023-09-01
Last modified: 2026-06-17

Description

An issue in hjson-java up to v3.0.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted JSON string.

Frequently asked questions

What is CVE-2023-39685?: An issue in hjson-java up to v3.0.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted JSON string.
How severe is CVE-2023-39685?: CVE-2023-39685 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-39685 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39685?: CVE-2023-39685 affects Hjson. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-39685?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-39685 published?: CVE-2023-39685 was published on 2023-09-01 and last updated on 2026-06-17.

References

https://github.com/hjson/hjson-java/issues/27

Affected products (1)

cpe:2.3:a:hjson:hjson:*:*:*:*:*:*:*:*

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