CVE-2023-53154

Publication date 23 May 2025

Last updated 26 January 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

2.9 · Low

Score breakdown

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

Package Ubuntu Release Status
cjson 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

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro 30-day free trial

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

Other references