CVE-2026-67217

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Source
https://cve.org/CVERecord?id=CVE-2026-67217
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67217.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-67217
Downstream
Published
2026-07-29T13:32:04.416Z
Modified
2026-08-12T03:51:18.748400830Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
cJSON JSON Patch Non-Atomic Application Destroys Data Before Validation
Details

cJSON through 1.7.19 applies RFC 6902 JSON Patch operations non-atomically in applypatch() in cJSONUtils.c. For a replace operation that is missing its value member, or a move operation whose destination path cannot be resolved, the existing target member is detached and deleted before the operation is fully validated, so the target document is mutated while cJSONUtilsApplyPatches() or cJSONUtilsApplyPatchesCaseSensitive() returns a failure status. An attacker who can supply the patch document can destroy addressable members of the target document even though the API reports that the patch failed, defeating the all-or-nothing behavior callers rely on to reject bad patches.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67217.json",
    "cwe_ids": [
        "CWE-696"
    ],
    "cna_assigner": "VulnCheck"
}
References

Affected packages

Git / github.com/davegamble/cjson

Affected ranges

Type
GIT
Repo
https://github.com/davegamble/cjson
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
c859b25da02955fef659d658b8f324b5cde87be3
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:davegamble:cjson:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.7.19"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

v0.*
v0.0.0
v1.*
v1.0.0
v1.0.1
v1.0.2
v1.1.0
v1.2.0
v1.2.1
v1.3.0
v1.3.1
v1.3.2
v1.4.0
v1.4.1
v1.4.2
v1.4.3
v1.4.4
v1.4.5
v1.4.6
v1.4.7
v1.5.0
v1.5.1
v1.5.2
v1.5.3
v1.5.4
v1.5.5
v1.5.6
v1.5.7
v1.5.8
v1.5.9
v1.6.0
v1.7.0
v1.7.1
v1.7.10
v1.7.11
v1.7.12
v1.7.13
v1.7.14
v1.7.15
v1.7.16
v1.7.17
v1.7.18
v1.7.19
v1.7.2
v1.7.3
v1.7.4
v1.7.5
v1.7.6
v1.7.7
v1.7.8
v1.7.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67217.json"