How severe is CVE-2023-26819?

CVE-2023-26819 has a CVSS 3.x base score of 2.9, rated low severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2023-26819 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26819?

CVE-2023-26819 affects Cjson Project Cjson. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-26819?

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

Does CVE-2023-26819 have an EU (EUVD) identifier?

Yes. CVE-2023-26819 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-30611.

When was CVE-2023-26819 published?

CVE-2023-26819 was published on 2025-04-19 and last updated on 2026-06-17.

CVE-2023-26819

CVE-2023-26819 is a low-severity vulnerability in Cjson Project Cjson with a CVSS 3.x base score of 2.9. 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-440.

Key facts

Severity: Low (CVSS 3.x base score 2.9)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-30611
Weakness: CWE-440
Affected product: Cjson Project Cjson
Published: 2025-04-19
Last modified: 2026-06-17

Description

cJSON 1.7.15 might allow a denial of service via a crafted JSON document such as {"a": true, "b": [ null,9999999999999999999999999999999999999999999999912345678901234567]}.

Frequently asked questions

What is CVE-2023-26819?: cJSON 1.7.15 might allow a denial of service via a crafted JSON document such as {"a": true, "b": [ null,9999999999999999999999999999999999999999999999912345678901234567]}.
How severe is CVE-2023-26819?: CVE-2023-26819 has a CVSS 3.x base score of 2.9, rated low severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2023-26819 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-26819?: CVE-2023-26819 affects Cjson Project Cjson. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-26819?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-26819 have an EU (EUVD) identifier?: Yes. CVE-2023-26819 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-30611.
When was CVE-2023-26819 published?: CVE-2023-26819 was published on 2025-04-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cjson_project:cjson:1.7.15:*:*:*:*:*:*:*

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