CVE-2023-26819

cJSON: cJSON rejects a valid text

Published Apr 19, 2025 CVSS 3.1 · 2.9 Low EPSS < 1% KEV · Not listed
Description
cJSON 1.7.15 might allow a denial of service via a crafted JSON document such as {"a": true, "b": [ null,9999999999999999999999999999999999999999999999912345678901234567]}.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4216-1 cjson security update
Ubuntu USN Ubuntu USN USN-7973-1 cJSON vulnerabilities
History
Type Values Removed Values Added
First Time appeared Cjson Project
Cjson Project cjson
CPEs cpe:2.3:a:cjson_project:cjson:1.7.15:*:*:*:*:*:*:*
Vendors & Products Cjson Project
Cjson Project cjson
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title cJSON: cJSON rejects a valid text
References
Metrics threat_severity

None

threat_severity

Low

Type Values Removed Values Added
Weaknesses CWE-440
Metrics cvssV3_1

{'score': 2.9, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L'}

Type Values Removed Values Added
Description cJSON 1.7.15 might allow a denial of service via a crafted JSON document such as {"a": true, "b": [ null,9999999999999999999999999999999999999999999999912345678901234567]}.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Nov 3, 2025, 7:28 PM
Reserved
Feb 27, 2023, 12:00 AM
Status
Modified
Published
Apr 19, 2025, 10:15 PM
Modified
Jun 17, 2026, 5:43 AM
Severity
Low
Public date
Apr 19, 2025, 12:00 AM