CVE-2026-59877

{"id": "CVE-2026-59877", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-59877", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-08T15:48:58.903197Z"}}], "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": ">= 7.5.0, < 7.6.5"}, {"status": "affected", "version": ">= 8.0.0, < 8.6.6"}]}]}], "published": "2026-07-08T16:16:34.363", "references": [{"url": "https://github.com/protobufjs/protobuf.js/commit/10fba6d54815ceecca8a06b9a6db490c8f5d2217", "source": "security-advisories@github.com"}, {"url": "https://github.com/protobufjs/protobuf.js/commit/fa5c73add738ceb471e74da8cc2f3727c3d0a69f", "source": "security-advisories@github.com"}, {"url": "https://github.com/protobufjs/protobuf.js/pull/2352", "source": "security-advisories@github.com"}, {"url": "https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.6.5", "source": "security-advisories@github.com"}, {"url": "https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.6.6", "source": "security-advisories@github.com"}, {"url": "https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-j3f2-48v5-ccww", "source": "security-advisories@github.com"}], "vulnStatus": "Received", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-835"}]}], "descriptions": [{"lang": "en", "value": "protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.6.5 and 8.6.6, protobufjs parsed option names by advancing through schema tokens until reaching an = token without checking for end of input, so a crafted .proto schema that opens an option declaration and ends prematurely can cause parse, Root.load, or Root.loadSync to loop indefinitely. This issue is fixed in versions 7.6.5 and 8.6.6."}], "lastModified": "2026-07-08T17:17:26.273", "sourceIdentifier": "security-advisories@github.com"}