CVE-2026-59876Published
protobufjs compiles protobuf definitions into JavaScript (JS) functions. From 8.2.0 until 8.6.5, the protobufjs Text Format extension parsed string-keyed map entries using ordinary property assignment, allowing a map entry with key __proto_…
Exact source revision recorded 25 Oct 2026 14:19:22 UTC. It does not establish the source's current position. Latest evidence.
Explicit identifiers and source references
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CVE-2026-59876 · Microsoft / collected KEV context
nvd · CVE-2026-59876
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