The Cjson Project maintains a lightweight, open-source JSON parsing library that is embedded across numerous applications and embedded systems despite its narrow product scope, making its reliability significant to downstream consumers. Vulnerabilities in cjson recur around input parsing and memory-handling weaknesses, including expected behavior violations, NULL-pointer dereferences, and out-of-bounds reads that reflect the low-level string and structure manipulation inherent to a parsing library. Live severity, exploitation, and exposure counts are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Cjson Project over time
Signals from CVEs in this vendor scope (3 CVEs).
3 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2024-31755HIGH cJSON v1.7.17 was discovered to contain a segmentation violation, which can trigger through the second parameter of function cJSON_SetValuestring at cJSON.c. | Apr 26, 2024 | 7.6 | 21 | NO | NO |
CVE-2023-53154MEDIUM parse_string in cJSON before 1.7.18 has a heap-based buffer over-read via {"1":1, with no trailing newline if cJSON_ParseWithLength is called. | May 23, 2025 | 5.5 | 17 | NO | NO |
cJSON 1.7.15 might allow a denial of service via a crafted JSON document such as {"a": true, "b": [ null,9999999999999999999999999999999999999999999999912345678901234567]}. | Apr 19, 2025 | 2.9 | 13 | NO | NO |
Signals from CVEs in this vendor scope (3 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Cjson Project.
Media articles that mention a CVE ID that affects a product developed by Cjson Project — matched by CVE ID, not by vendor name.