CVE-2023-26819

Publication date 19 April 2025

Last updated 26 January 2026

Ubuntu priority

Cvss 3 Severity Score

Description

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

Status

Show unmaintained releases

Package	Ubuntu Release	Status
cjson	25.10 questing	Not affected
	25.04 plucky	Ignored end of life, was needed
	24.10 oracular	Ignored end of life, was needs-triage
	24.04 LTS noble	Fixed 1.7.17-1ubuntu0.1~esm3
	22.04 LTS jammy	Fixed 1.7.15-1ubuntu0.1
	20.04 LTS focal	Fixed 1.7.10-1.1ubuntu0.1~esm1

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
cjson	Upstream: a328d65

Severity score breakdown

Parameter	Value
Base score	2.9 · Low
Attack vector	Local
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

References

Related Ubuntu Security Notices (USN)

USN-7973-1
cJSON vulnerabilities
23 January 2026