Cjsonproject Cjson

Heap buffer over-read in cJSON parse_string pre-1.7.18 via JSON input
CVE-2023-53154 5.5 - Medium - May 23, 2025

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.

Out-of-bounds Read

cJSON <=1.7.15 DOS via oversized array element
CVE-2023-26819 - April 19, 2025

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

cJSON v1.7.17 Segfault via cJSON_SetValuestring(second param)
CVE-2024-31755 - April 26, 2024

cJSON v1.7.17 was discovered to contain a segmentation violation, which can trigger through the second parameter of function cJSON_SetValuestring at cJSON.c.

Segmentation Violation in cJSON 1.7.16 via cJSON_SetValuestring
CVE-2023-50472 7.5 - High - December 14, 2023

cJSON v1.7.16 was discovered to contain a segmentation violation via the function cJSON_SetValuestring at cJSON.c.

NULL Pointer Dereference

cJSON v1.7.16 Segfault: cJSON_InsertItemInArray
CVE-2023-50471 - December 14, 2023

cJSON v1.7.16 was discovered to contain a segmentation violation via the function cJSON_InsertItemInArray at cJSON.c.

DaveGamble/cJSON cJSON 1.7.8 is affected by: Improper Check for Unusual or Exceptional Conditions
CVE-2019-1010239 7.5 - High - July 19, 2019

DaveGamble/cJSON cJSON 1.7.8 is affected by: Improper Check for Unusual or Exceptional Conditions. The impact is: Null dereference, so attack can cause denial of service. The component is: cJSON_GetObjectItemCaseSensitive() function. The attack vector is: crafted json file. The fixed version is: 1.7.9 and later.

Improper Check for Unusual or Exceptional Conditions

cJSON before 1.7.11
CVE-2019-11834 9.8 - Critical - May 09, 2019

cJSON before 1.7.11 allows out-of-bounds access, related to \x00 in a string literal.

Out-of-bounds Read

cJSON before 1.7.11
CVE-2019-11835 9.8 - Critical - May 09, 2019

cJSON before 1.7.11 allows out-of-bounds access, related to multiline comments.

Out-of-bounds Read

Dave Gamble cJSON version 1.7.6 and earlier contains a CWE-772 vulnerability in cJSON library that can result in Denial of Service (DoS)
CVE-2018-1000215 7.5 - High - August 20, 2018

Dave Gamble cJSON version 1.7.6 and earlier contains a CWE-772 vulnerability in cJSON library that can result in Denial of Service (DoS). This attack appear to be exploitable via If the attacker can force the data to be printed and the system is in low memory it can force a leak of memory. This vulnerability appears to have been fixed in 1.7.7.

Missing Release of Resource after Effective Lifetime

Dave Gamble cJSON version 1.7.2 and earlier contains a CWE-415: Double Free vulnerability in cJSON library
CVE-2018-1000216 8.8 - High - August 20, 2018

Dave Gamble cJSON version 1.7.2 and earlier contains a CWE-415: Double Free vulnerability in cJSON library that can result in Possible crash or RCE. This attack appear to be exploitable via Attacker must be able to force victim to print JSON data, depending on how cJSON library is used this could be either local or over a network. This vulnerability appears to have been fixed in 1.7.3.

Double-free

Dave Gamble cJSON version 1.7.3 and earlier contains a CWE-416: Use After Free vulnerability in cJSON library
CVE-2018-1000217 9.8 - Critical - August 20, 2018

Dave Gamble cJSON version 1.7.3 and earlier contains a CWE-416: Use After Free vulnerability in cJSON library that can result in Possible crash, corruption of data or even RCE. This attack appear to be exploitable via Depends on how application uses cJSON library. If application provides network interface then can be exploited over a network, otherwise just local.. This vulnerability appears to have been fixed in 1.7.4.

Dangling pointer