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.
Scores
CVSS v3
9.8
EPSS
0.0020
EPSS Percentile
42.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-125
CWE-129
Status
published
Products (1)
davegamble/cjson
1.5.0 - 1.7.18
Published
Sep 03, 2025
Tracked Since
Feb 18, 2026