{"id":"EUVD-2026-38307","revision":null,"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":[]},{"revision":"c6af5cb8c2864ab79efe58be50e24d52","observedAt":"2026-11-07T12:28:59.279+00:00","statement":{"source":"euvd","id":"EUVD-2026-38307","aliases":["CVE-2026-54269","GHSA-f38q-mgvj-vph7"],"title":"protobufjs compiles protobuf definitions into JavaScript (JS) functions. 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This vulnerability is fixed in 8.6.0 and 7.6.3.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD 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":null}],"references":["https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-f38q-mgvj-vph7"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-38307","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jun 22, 2026, 4:23:24 PM","dateUpdated":"Jun 23, 2026, 4:09:36 PM"},"relatedAdvisories":[],"note":"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."},"key":"euvd:EUVD-2026-38307","identifiers":["EUVD-2026-38307","CVE-2026-54269","GHSA-f38q-mgvj-vph7"]},"retained":false,"historicalAffected":[]},{"revision":"7bb8cd4ad3f142df844e37ea2061a07c","observedAt":"2026-10-27T14:13:32.924+00:00","statement":{"source":"nvd","id":"CVE-2026-54269","aliases":[],"title":"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 na…","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":"2026-06-22T18:16:45.35+00:00","modifiedAt":"2026-10-25T23:10:00.167+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","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://nvd.nist.gov/vuln/detail/CVE-2026-54269","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-674","CWE-754"],"productCriteria":["cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*","cpe:2.3:a:protobufjs_project:protobufjs-cli:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-06-22T18:16:45.350","lastModified":"2026-10-25T23:10:00.167"},"relatedAdvisories":[],"note":"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."},"key":"nvd:CVE-2026-54269","identifiers":["CVE-2026-54269"]},"retained":false,"historicalAffected":[]},{"revision":"e6f1f766f23f4d84aaa498b2f0cc8eb1","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-f38q-mgvj-vph7","aliases":["CVE-2026-54269"],"title":"protobufjs : Schema-derived names can shadow runtime-significant properties","description":"## Summary\n\nprotobufjs 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`.\n\nWhen 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.\n\n## Impact\n\nAn attacker who can provide or influence protobuf schemas or protobufjs JSON descriptors may be able to make affected message or service types unusable, resulting in denial of service for the affected processing path.\n\nApplications using only trusted schemas are affected only if those schemas contain one of the problematic names and the application reaches the affected API path.\n\nThe issue is not known to allow code execution by itself.\n\n## Preconditions\n\n* The application must use an affected protobufjs version.\n* The application must load or use a schema or protobufjs JSON descriptor containing one of the problematic names:\n  * a field named `hasOwnProperty`,\n  * a field or oneof named `$type` through protobufjs JSON/reflection descriptor input,\n  * or a service method whose generated helper name is `rpcCall`.\n* The application must reach the affected API path for that name: required-field decode post-checks, `verify`, or `toObject` for `hasOwnProperty`; reflected message JSON serialization for `$type`; or protobufjs RPC service invocation for `rpcCall`.\n\n## Workarounds\n\nDo not load protobuf schemas or protobufjs JSON descriptors from untrusted sources with affected versions. If untrusted schemas or descriptors must be accepted, validate schema-derived field, oneof, and service method names before loading and reject the problematic names described above.\n\nApplications using trusted schemas can avoid the issue by renaming affected fields or service methods, or by avoiding the affected API path.","state":0,"publishedAt":"2026-06-15T17:27:18+00:00","modifiedAt":"2026-09-10T03:50:49.2798496+00:00","affected":[{"ecosystem":"npm","name":"protobufjs","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"7.6.3"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"protobufjs-cli","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"2.0.0"},{"kind":"fixed","version":"2.5.1"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"protobufjs-cli","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.3.3"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"protobufjs","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"8.0.0"},{"kind":"fixed","version":"8.6.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-f38q-mgvj-vph7","https://nvd.nist.gov/vuln/detail/CVE-2026-54269","https://github.com/protobufjs/protobuf.js"],"sourceUrl":"https://github.com/advisories/GHSA-f38q-mgvj-vph7","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-f38q-mgvj-vph7","identifiers":["GHSA-f38q-mgvj-vph7","CVE-2026-54269"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-07T20:52:46.7845564+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-07T20:52:46.7845564+00:00","lastSuccessAt":"2026-11-07T20:52:46.9707302+00:00","error":null,"lastVerifiedAt":"2026-11-07T20:52:46.9707321+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-bb5c9d5a08063ef076042e33dd72a7d0ffa4c4487efdcf3106e29ba55ec2ad57-1766179264875bb4621a23ce4c6bcebec63fb794a16e35c2f5592f4ee300ee2e","complete":true,"records":420944,"lastAttemptAt":"2026-11-07T20:52:46.1142943+00:00","lastSuccessAt":"2026-11-07T20:52:46.0341312+00:00","error":null,"lastVerifiedAt":"2026-11-07T20:52:46.1142943+00:00","snapshotPublishedAt":"2026-11-07T20:26:36+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-cbfb00168958467aaa6015d5230faa08","complete":true,"records":13633,"lastAttemptAt":"2026-11-07T21:04:54.6100336+00:00","lastSuccessAt":"2026-11-07T21:04:54.606+00:00","error":null,"lastVerifiedAt":"2026-11-07T21:04:54.606+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13685,"expectedIdentifiers":13685,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. 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