CVE-2023-53154

Publication date 23 May 2025

Last updated 26 January 2026

Ubuntu priority

Cvss 3 Severity Score

Description

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
cjson	26.04 LTS resolute	Not affected
	25.10 questing	Not affected
	25.04 plucky	Not affected
	24.10 oracular	Not affected
	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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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