CVE-2026-54270

{"id": "CVE-2026-54270", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-54270", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-23T14:47:41.353008Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "protobufjs", "product": "protobuf.js", "versions": [{"status": "affected", "version": ">=8.2.0, < 8.5.0"}]}]}], "published": "2026-06-22T18:16:45.480", "references": [{"url": "https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-94rc-8x27-4472", "tags": ["Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "protobufjs compiles protobuf definitions into JavaScript (JS) functions. From 8.2.0 to 8.4.2, protobufjs preserved unknown wire elements in message.$unknowns and did not provide a decode-time option to discard unknown fields before retaining them. A crafted protobuf payload containing many unknown fields could therefore cause a decoded message to retain substantially more memory than the input size would suggest, even when unknown-field round-tripping is not needed. protobufjs 8.5.0 added the relevant decode-time options, allowing applications that decode untrusted protobuf data to disable unknown-field retention during decode. protobufjs 8.6.2 flips the default so unknown fields are discarded unless explicitly opted into."}, {"lang": "es", "value": "protobufjs compila definiciones de protobuf en funciones de JavaScript (JS). Desde la versi\u00f3n 8.2.0 hasta la 8.4.2, protobufjs conservaba elementos de cable desconocidos en message.$unknowns y no proporcionaba una opci\u00f3n en tiempo de decodificaci\u00f3n para descartar campos desconocidos antes de retenerlos. Una carga \u00fatil de protobuf manipulada que conten\u00eda muchos campos desconocidos podr\u00eda, por lo tanto, causar que un mensaje decodificado retuviera sustancialmente m\u00e1s memoria de lo que sugerir\u00eda el tama\u00f1o de entrada, incluso cuando no es necesario el viaje de ida y vuelta de campos desconocidos. protobufjs 8.5.0 a\u00f1adi\u00f3 las opciones relevantes en tiempo de decodificaci\u00f3n, permitiendo que las aplicaciones que decodifican datos protobuf no confiables deshabiliten la retenci\u00f3n de campos desconocidos durante la decodificaci\u00f3n. protobufjs 8.6.2 invierte el valor predeterminado de modo que los campos desconocidos se descartan a menos que se opte expl\u00edcitamente por ellos."}], "lastModified": "2026-10-25T23:10:00.167", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "A722DAF4-51C8-4165-8DFB-72D52BC31853", "versionEndExcluding": "8.5.0", "versionStartIncluding": "8.2.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}