Vulnerability · Published Apr 19, 2025 · Assigned by mitre
CVE-2023-26819
Low 2.9
In plain English
A low-severity security flaw in cJSON from cJSON Project. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)2.9Low
Exploit odds (30 days)0.2%top 85.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
cJSON 1.7.15 might allow a denial of service via a crafted JSON document such as {"a": true, "b": [ null,9999999999999999999999999999999999999999999999912345678901234567]}.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | cjson | 1.7.15-1+deb12u3 | DEBIAN-CVE-2023-26819 |
| Debian:13 | cjson | 1.7.18-3.1 | DEBIAN-CVE-2023-26819 |
| Debian:14 | cjson | 1.7.18-3.1 | DEBIAN-CVE-2023-26819 |
| Ubuntu:22.04:LTS | cjson | 1.7.15-1ubuntu0.1 | USN-7973-1 |
| Ubuntu:22.04:LTS | cjson | 1.7.15-1ubuntu0.1 | UBUNTU-CVE-2023-26819 |
| Ubuntu:25.10 | cjson | 1.7.18-3.1ubuntu0.1 | USN-7973-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| cJSON Project | cJSON | 1.7.15 |
Weakness: CWE-440 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L