HIGHVulnerability
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NVD HIGH: CVE-2026-67215 — cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack ex...

·Source: NIST NVD

Updated:

Executive Summary

cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC 6902 JSON Patch is applied via cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive(). A patch containing add and copy operations grafts duplicated subtrees to amplify document depth beyond the parser's nesting limit: cJSON_Delete() recurses with no depth bound, and the cJSON

Analysis

cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC 6902 JSON Patch is applied via cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive(). A patch containing add and copy operations grafts duplicated subtrees to amplify document depth beyond the parser's nesting limit: cJSON_Delete() recurses with no depth bound, and the cJSON_Duplicate() guard CJSON_CIRCULAR_LIMIT is set to 10000, ten times the parser's 1000-level nesting limit and high enough to overflow a default thread stack. An attacker who can supply the patch document can crash the process, resulting in denial of service. CVSS Score: 7.5. Published: 2026-07-29T14:16:35.187.

Indicators of Compromise (1)

CVE (1)
CVE-2026-67215
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Jul 29, 2026. Verified by: NIST.

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