GHSA-gcqx-w48m-w2h4Published
deepmerge mergeObject() allows prototype poisoning of returned objects
Exact source revision recorded 27 Oct 2026 22:46:24 UTC. It does not establish the source's current position. Latest evidence.
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CVE-2026-93753 · Microsoft / collected KEV context
osv · GHSA-gcqx-w48m-w2h4
- https://nvd.nist.gov/vuln/detail/CVE-2026-93753
- https://github.com/TehShrike/deepmerge/issues/273
- https://github.com/TehShrike/deepmerge
- https://github.com/TehShrike/deepmerge/blob/5b87756a5671635679001cbac72aa42f23472c81/index.js#L39-L60
- https://www.vulncheck.com/advisories/deepmerge-through-4.3.1-prototype-poisoning-via-mergeobject
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