CVE-2026-8657

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Source
https://cve.org/CVERecord?id=CVE-2026-8657
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8657.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-8657
Aliases
Downstream
Related
Published
2026-05-16T05:00:09Z
Modified
2026-09-02T03:55:58Z
Severity
  • 7.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
[none]
Details

Versions of the package jsondiffpatch before 0.7.6 are vulnerable to Prototype Pollution via the jsondiffpatch.patch() and jsondiffpatch/formatters/jsonpatch.patch() APIs. An attacker can perform prototype pollution by supplying crafted delta or JSON Patch documents, as attacker-controlled property names and path segments are used to traverse and modify objects without restricting access to special properties like proto or constructor.prototype, allowing modification of Object.prototype.

Database specific 
{
    "cna_assigner": "snyk",
    "cwe_ids": [
        "CWE-1321"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8657.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "0.7.6"
                },
                {
                    "fixed": "*"
                }
            ],
            "source": "AFFECTED_FIELD"
        },
        {
            "extracted_events": [
                {
                    "fixed": "0.7.6"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}
References

Affected packages

Git / github.com/benjamine/jsondiffpatch

Affected ranges

Type
GIT
Repo
https://github.com/benjamine/jsondiffpatch
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
381c0125efab49f6f0dbc08317d01d55717672af
Database specific
Show details 
{
    "source": "REFERENCES"
}

Affected versions

v0.*
v0.0.2
v0.0.3
v0.0.5
v0.0.6
v0.0.7
v0.0.8
v0.1.2
v0.1.3
v0.1.35
v0.1.4
v0.1.42
v0.1.5
v0.1.6
v0.1.7
v0.1.8
v0.3.10
v0.3.11
v0.3.6
v0.3.7
v0.3.8
v0.3.9
v0.5.0
v0.6.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8657.json"