{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-44292", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-05T17:39:31.112Z", "datePublished": "2026-05-13T14:42:55.155Z", "dateUpdated": "2026-05-13T14:42:55.155Z"}, "containers": {"cna": {"title": "protobufjs: Prototype injection in generated message constructors", "problemTypes": [{"descriptions": [{"cweId": "CWE-1321", "lang": "en", "description": "CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')", "type": "CWE"}]}], "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"}}], "references": [{"name": "https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-fx83-v9x8-x52w", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-fx83-v9x8-x52w"}], "affected": [{"vendor": "protobufjs", "product": "protobuf.js", "versions": [{"version": "< 7.5.6", "status": "affected"}, {"version": ">= 8.0.0, < 8.0.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-13T14:42:55.155Z"}, "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."}], "source": {"advisory": "GHSA-fx83-v9x8-x52w", "discovery": "UNKNOWN"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "BC190A12-59A1-4DEF-A65D-E4216ED5B807", "versionEndExcluding": "7.5.6", "vulnerable": true}, {"criteria": "cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "734292AA-F3B2-4E3E-9FA2-0EBA7AB0BB45", "versionEndExcluding": "8.0.2", "versionStartIncluding": "8.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}], "id": "CVE-2026-44292", "lastModified": "2026-05-13T20:58:32.597", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-05-13T16:16:56.123", "references": [{"source": "security-advisories@github.com", "tags": ["Vendor Advisory", "Mitigation"], "url": "https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-fx83-v9x8-x52w"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1321"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.5.6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.0.0,8.0.2)"}}], "enrichment": {"confidence": 87.0, "confidence_source": "matching", "scores": [{"score": 87.0, "source": "matching"}]}, "original": {"product": "protobuf.js", "source": "cna", "vendor": "protobufjs"}, "product": "protobuf", "vendor": "protobuf"}], "created": "2026-05-13T18:15:16.579857+00:00", "updated": "2026-05-14T14:30:15.874460+00:00", "vendors": ["protobuf", "protobuf$PRODUCT$protobuf"]}