CVE-2026-16266

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Source

https://cve.org/CVERecord?id=CVE-2026-16266

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-16266.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-16266

Published

2026-07-21T05:00:00.647Z

Modified

2026-07-25T03:56:36.623752236Z

Severity

6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N CVSS Calculator

Summary

[none]

Details

Versions of the package mongo-object before 3.0.3 are vulnerable to Prototype Pollution via the expandKey() function in util.js. An attacker can modify the JavaScript prototype chain by supplying a crafted property path containing special keys such as proto.

Database specific

{
    "cna_assigner": "snyk",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/16xxx/CVE-2026-16266.json",
    "cwe_ids": [
        "CWE-1321"
    ]
}

References

Affected packages

Git / github.com/longshotlabs/mongo-object

Affected ranges

Type

GIT

Repo

https://github.com/longshotlabs/mongo-object

Events

Introduced

Fixed

189e05e3a91cf15c79f0fd4a565ae2d501d10bd9

Fixed

638314107d8b397e5453c28e41729522b3e8d67c

Database specific

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.0.3"
        }
    ],
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Affected versions

0.*

0.1.2

0.1.3

0.1.4

0.2.0

1.*

1.0.0

2.*

2.0.0

3.*

3.0.0

3.0.1

3.0.2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-16266.json"