{"id":"CVE-2026-44292","state":"PUBLISHED","title":"protobufjs: Prototype injection in generated message constructors","description":"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.","publishedAt":"2026-05-13T14:42:55.155Z","updatedAt":"2026-05-18T14:01:31.297Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["protobufjs protobuf.js"],"affected":[{"vendor":"protobufjs","product":"protobuf.js","versions":[{"version":"< 7.5.6","status":"affected"},{"version":">= 8.0.0, < 8.0.2","status":"affected"}]}],"references":["https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-fx83-v9x8-x52w"],"weaknesses":["CWE-1321"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44292.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44292","state":"PUBLISHED","datePublished":"2026-05-13T14:42:55.155Z","dateUpdated":"2026-05-18T14:01:31.297Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-05T17:39:31.112Z"},"containers":{"cna":{"title":"protobufjs: Prototype injection in generated message constructors","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"protobufjs","product":"protobuf.js","versions":[{"version":"< 7.5.6","status":"affected"},{"version":">= 8.0.0, < 8.0.2","status":"affected"}]}],"references":[{"url":"https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-fx83-v9x8-x52w","name":"https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-fx83-v9x8-x52w","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1321","lang":"en","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-13T14:42:55.155Z"},"source":{"advisory":"GHSA-fx83-v9x8-x52w","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-18T13:59:48.572838Z","id":"CVE-2026-44292","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-18T14:01:31.297Z"}}]}}}