{"id":"CVE-2026-44292","summary":"protobufjs: Prototype injection in generated message constructors","details":"protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs generated message constructors copied enumerable properties from a provided properties object without filtering the __proto__ key. If an application constructed a message from an attacker-controlled plain object, an own enumerable __proto__ property could alter the prototype of that individual message instance. This vulnerability is fixed in 7.5.6 and 8.0.2.","aliases":["GHSA-fx83-v9x8-x52w"],"modified":"2026-07-15T01:48:52.407167852Z","published":"2026-05-13T14:42:55.155Z","related":["CGA-px6f-wmh3-99xq"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-1321"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44292.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44292.json"},{"type":"ADVISORY","url":"https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-fx83-v9x8-x52w"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44292"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/protobufjs/protobuf.js","events":[{"introduced":"0"},{"fixed":"2189e5beeca6a70e4c104dfdb9fb8200bc5f81fe"},{"introduced":"933e8750dcd000c16a621a7344a4beaa034c4019"},{"fixed":"658b93e163d9aff8c31236c168657bab5e2d9bbc"}],"database_specific":{"cpe":"cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*","extracted_events":[{"introduced":"0"},{"fixed":"7.5.6"},{"introduced":"8.0.0"},{"fixed":"8.0.2"}],"source":"CPE_RANGE"}}],"versions":["protobufjs-v7.5.5","protobufjs-v8.0.1","protobufjs-cli-v2.0.1","protobufjs-v7.5.4","protobufjs-v8.0.0","protobufjs-cli-v2.0.0","protobufjs-v7.5.3","protobufjs-v7.5.2","protobufjs-v7.5.1","protobufjs-v7.5.0","protobufjs-cli-v1.2.0","protobufjs-v7.4.0","protobufjs-cli-v1.1.4","protobufjs-v7.3.3","protobufjs-cli-v1.1.3","protobufjs-v7.3.2","protobufjs-v7.3.1","protobufjs-v7.3.0","protobufjs-v7.2.6","protobufjs-v7.2.5","protobufjs-cli-v1.1.2","protobufjs-v7.2.4","protobufjs-v7.2.3","protobufjs-v7.2.2","protobufjs-v7.2.1","protobufjs-cli-v1.1.1","protobufjs-v7.2.0","protobufjs-cli-v1.1.0","protobufjs-v7.1.2","protobufjs-v7.1.1","protobufjs-cli-v1.0.2","protobufjs-v7.1.0","protobufjs-cli-v1.0.1","protobufjs-v7.0.0","protobufjs-cli-v1.0.0","v6.10.2","v6.10.1","v6.10.1-beta.0","v6.10.0","v6.10.0-beta.2","v6.10.0-beta.1","v6.10.0-beta.0","v6.9.0","v6.9.0-beta.0","6.8.8","6.8.7","6.8.6","6.8.5","6.8.4","6.8.3","6.8.2","6.8.1","6.8.0","6.7.3","6.7.2","6.7.1","6.7.0","6.6.5","6.6.4","6.6.3","6.6.2","6.6.1","6.6.0","6.5.3","6.5.2","6.5.1","6.5.0","6.4.6","6.4.5","6.4.4","6.4.3","6.4.2","6.4.1","6.4.0","6.3.1","6.3.0","6.2.1","6.2.0","6.1.1","6.1.0","6.0.2","6.0.1","6.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44292.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}]}