Use of Incorrectly-Resolved Name or Reference Affecting cjson package, versions <1.7.18-3.1+deb13u1+e2


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.44% (36th percentile)

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  • Snyk IDSNYK-ECHOLATEST-CJSON-18860298
  • published16 Aug 2026
  • disclosed11 Aug 2026

Introduced: 11 Aug 2026

CVE-2026-29036  (opens in a new tab)
CWE-706  (opens in a new tab)

How to fix?

Upgrade Echo:latest cjson to version 1.7.18-3.1+deb13u1+e2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cjson package and not the cjson package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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 Base Scores

version 3.1