CVE-2025-57052

CRITICAL9.8EPSS 0.27%

cjson - security update

Published: 9/3/2025Modified: 4/28/2026

Description

cJSON 1.5.0 through 1.7.18 allows out-of-bounds access via the decode_array_index_from_pointer function in cJSON_Utils.c, allowing remote attackers to bypass array bounds checking and access restricted data via malformed JSON pointer strings containing alphanumeric characters.

Affected packages (4)

Alpine/cjsonfrom 0, < 1.7.19-r0
Debian/cjsonfrom 0, < 1.7.14-1+deb11u3
Debian/cjsonfrom 0, < 1.7.14-1+deb11u3
Debian/cjsonfrom 0, < 1.7.15-1+deb12u4

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	CRITICAL9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (2)

ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2025-57052
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2025-57052