GHSA-gcqx-w48m-w2h4Published

deepmerge through 4.3.1 Prototype Poisoning via mergeObject

cve-program · CVE-2026-93753

Published

deepmerge

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "TehShrike",
                    "product": "deepmerge",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:npm/deepmerge",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThanOrEqual": "4.3.1"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2026-83258

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Sep 18, 2026, 5:51:37 PM

dateUpdated: Sep 24, 2026, 2:23:12 PM

1 related source bulletins · separate from aliases

openSUSE-SU-2026:12285-1: golang-github-prometheus-prometheus-3.15.0-2.1 on GA media

CVE-2026-93753

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2026-93753

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Deferred

Weakness classifications: CWE-1321

Original publisher date fields

published: 2026-09-18T18:18:34.487

lastModified: 2026-09-23T17:17:50.017

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-gcqx-w48m-w2h4

Published

deepmerge

npm

SEMVER · introduced 4.2.0 → last_affected 4.3.1

Original source record · Cite this exact observation · Complete original publisher JSON