{"id":"CVE-2026-54269","revision":"fd2a7a7000f0417b83709f7e63073c9b","records":[{"revision":"fd2a7a7000f0417b83709f7e63073c9b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-54269","aliases":[],"title":"protobufjs: Schema-derived names can shadow runtime-significant properties","description":"protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 8.6.0 and 7.6.3, protobufjs accepted certain schema-derived names that could collide with properties used by protobufjs runtime helpers. The known affected names are fields named hasOwnProperty, field or oneof names such as $type when loaded through protobufjs JSON/reflection descriptors, and service methods whose generated helper name is rpcCall. When affected message or service types were used, protobufjs could read schema-controlled data where it expected an own-property helper, reflected type metadata, or the base RPC helper. This could cause deterministic exceptions or recursive calls in affected decode post-checks, verification, object conversion, reflected JSON serialization, or protobufjs RPC helper invocation. This vulnerability is fixed in 8.6.0 and 7.6.3.","state":0,"publishedAt":"2026-06-22T16:23:24.383+00:00","modifiedAt":"2026-06-23T16:09:36.165+00:00","affected":[{"ecosystem":"Vendor product","name":"protobuf.js","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"protobufjs\",\n                    \"product\": \"protobuf.js\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 7.6.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 8.0.0, < 8.6.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-f38q-mgvj-vph7"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-54269","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-54269","identifiers":["CVE-2026-54269"]},"retained":false,"historicalAffected":[]}],"coverage":[]}