CVE-2023-53154

LOW

Published May 23, 2025 Modified Nov 3, 2025 CWE-125

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.

CVSS v3.1 Score

2.9

LOW

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
cjson_project	cjson	< 1.7.18

References

Advisories & Patches

https://github.com/DaveGamble/cJSON/issues/800 https://github.com/DaveGamble/cJSON/issues/800

Exploits

https://github.com/DaveGamble/cJSON/issues/800 https://github.com/DaveGamble/cJSON/issues/800

Other References

https://github.com/DaveGamble/cJSON/compare/v1.7.17...v1.7.18 https://lists.debian.org/debian-lts-announce/2025/06/msg00014.html

Frequently Asked Questions

What is CVE-2023-53154? +

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. It has a CVSS v3.1 base score of 2.9 (LOW).

How severe is CVE-2023-53154? +

CVE-2023-53154 has a CVSS v3.1 score of 2.9 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2023-53154? +

CVE-2023-53154 affects products from cjson_project, specifically: cjson. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-53154? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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