HIGHVulnerability
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Global

NVD HIGH: CVE-2026-29036 — cJSON versions 1.5.0 through 1.7.19 contain an incorrectly-resolved name or refe...

·Source: NIST NVD

Updated:

Executive Summary

cJSON versions 1.5.0 through 1.7.19 contain an incorrectly-resolved name or reference vulnerability in the decode_pointer_inplace() function within cJSON_Utils.c that allows unauthenticated attackers to cause JSON Patch operations to target wrong object keys by supplying crafted JSON Pointer escape sequences (~0 or ~1) in patch paths. Attackers can submit malicious RFC 6902 JSON Patch input to app

Analysis

cJSON versions 1.5.0 through 1.7.19 contain an incorrectly-resolved name or reference vulnerability in the decode_pointer_inplace() function within cJSON_Utils.c that allows unauthenticated attackers to cause JSON Patch operations to target wrong object keys by supplying crafted JSON Pointer escape sequences (~0 or ~1) in patch paths. Attackers can submit malicious RFC 6902 JSON Patch input to applications using cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive() to silently corrupt data or delete unintended keys, potentially bypassing authorization controls in applications that rely on JSON Patch for access-controlled data modification. CVSS Score: 7.5. Published: 2026-08-11T22:17:22.257.

Indicators of Compromise (1)

CVE (1)
CVE-2026-29036
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Aug 11, 2026. Verified by: NIST.

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