CVE-2026-54269

{"id": "CVE-2026-54269", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-54269", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-23T16:07:04.844722Z"}}], "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": "< 7.6.3"}, {"status": "affected", "version": ">= 8.0.0, < 8.6.0"}]}]}], "published": "2026-06-22T18:16:45.350", "references": [{"url": "https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-f38q-mgvj-vph7", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-674"}, {"lang": "en", "value": "CWE-754"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-06-24T20:40:20.407", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "63CB499F-BC12-4D70-BD4A-38BD2CE92D99", "versionEndExcluding": "7.6.3"}, {"criteria": "cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "287A0FDC-7F44-4088-A0B2-51859135AB3E", "versionEndExcluding": "8.6.0", "versionStartIncluding": "8.0.0"}, {"criteria": "cpe:2.3:a:protobufjs_project:protobufjs-cli:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "E1117BF5-FD6A-4DDC-A5A3-681CD7FA937D", "versionEndExcluding": "1.3.3"}, {"criteria": "cpe:2.3:a:protobufjs_project:protobufjs-cli:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "77B18CCF-6A37-4D44-822B-B0102CE8F496", "versionEndExcluding": "2.5.1", "versionStartIncluding": "2.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}