Vulnerability in Cjson Project
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]}.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.9 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (12.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Cjson Project — versions 1.7.15
- Cjson Project — versions 1.7.15
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/boofish/json_bugs/tree/main/cjson (Exploit, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-26819?
- CVE-2023-26819 is a low-severity vulnerability in Cjson Project, classified under Expected Behavior Violation. CVSS score: 2.9/10. Published 2025-04-19.
- How severe is CVE-2023-26819?
- Low severity. CVSS v3 base score is 2.9 out of 10.
- Is CVE-2023-26819 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.