{"schema_version":1,"title":"Protobufjs Protobuf.js vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 11 vulnerabilities in Protobufjs Protobuf.js: 0 in the last 7 days and 0 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-54270, was published on 22 June 2026.","url":"https://junglewise.ai/threats/technologies/protobuf-js","json_url":"https://junglewise.ai/threats/technologies/protobuf-js.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/protobuf-js","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":5,"all_time":11,"critical":1,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":11},"latest":[{"cve":"CVE-2026-54270","cvss":5.3,"epss":0.004,"slug":"cve-2026-54270-protobufjs-memory-amplification-via-unknown-field-preservation","title":"protobufjs memory amplification via unknown field preservation","severity":"medium","exploited":false,"published_at":"2026-06-22T18:16:45.48+00:00","url":"https://junglewise.ai/threats/cve-2026-54270-protobufjs-memory-amplification-via-unknown-field-preservation"},{"cve":"CVE-2026-54269","cvss":5.3,"epss":0.004,"slug":"cve-2026-54269-protobufjs-property-shadowing-and-uncontrolled-recursion","title":"protobufjs property shadowing and uncontrolled recursion","severity":"medium","exploited":false,"published_at":"2026-06-22T18:16:45.35+00:00","url":"https://junglewise.ai/threats/cve-2026-54269-protobufjs-property-shadowing-and-uncontrolled-recursion"},{"cve":"CVE-2026-48712","cvss":7.5,"epss":0.0046,"slug":"cve-2026-48712-protobufjs-uncontrolled-recursion-in-json-conversion","title":"protobufjs uncontrolled recursion in JSON conversion","severity":"high","exploited":false,"published_at":"2026-06-22T18:16:39.64+00:00","url":"https://junglewise.ai/threats/cve-2026-48712-protobufjs-uncontrolled-recursion-in-json-conversion"},{"cve":"CVE-2026-45740","cvss":5.3,"epss":0.0046,"slug":"cve-2026-45740-protobufjs-uncontrolled-recursion-in-json-descriptor-expansion","title":"protobufjs uncontrolled recursion in JSON descriptor expansion","severity":"medium","exploited":false,"published_at":"2026-05-13T16:17:00.52+00:00","url":"https://junglewise.ai/threats/cve-2026-45740-protobufjs-uncontrolled-recursion-in-json-descriptor-expansion"},{"cve":"CVE-2026-44294","cvss":5.3,"epss":0.004,"slug":"cve-2026-44294-protobuf-js-denial-of-service-via-crafted-field-names","title":"protobufjs denial of service via crafted field names in generated code","severity":"medium","exploited":false,"published_at":"2026-05-13T16:16:56.38+00:00","url":"https://junglewise.ai/threats/cve-2026-44294-protobuf-js-denial-of-service-via-crafted-field-names"},{"cve":"CVE-2026-44293","cvss":8.8,"epss":0.0073,"slug":"cve-2026-44293-protobufjs-code-injection-in-toobject-function-generation","title":"protobufjs code injection in toObject function generation","severity":"high","exploited":false,"published_at":"2026-05-13T16:16:56.253+00:00","url":"https://junglewise.ai/threats/cve-2026-44293-protobufjs-code-injection-in-toobject-function-generation"},{"cve":"CVE-2026-44291","cvss":8.1,"epss":0.0042,"slug":"cve-2026-44291-protobuf-js-code-injection-via-prototype-pollution-gadget","title":"protobufjs code injection via prototype pollution in lookup tables","severity":"high","exploited":false,"published_at":"2026-05-13T16:16:55.987+00:00","url":"https://junglewise.ai/threats/cve-2026-44291-protobuf-js-code-injection-via-prototype-pollution-gadget"},{"cve":"CVE-2026-44290","cvss":7.5,"epss":0.005,"slug":"cve-2026-44290-protobufjs-prototype-pollution-in-schema-parsing","title":"protobufjs prototype pollution in schema option handling","severity":"high","exploited":false,"published_at":"2026-05-13T16:16:55.847+00:00","url":"https://junglewise.ai/threats/cve-2026-44290-protobufjs-prototype-pollution-in-schema-parsing"},{"cve":"CVE-2026-44289","cvss":7.5,"epss":0.0068,"slug":"cve-2026-44289-protobufjs-uncontrolled-recursion-in-protobuf-decoding","title":"protobufjs uncontrolled recursion in protobuf decoding","severity":"high","exploited":false,"published_at":"2026-05-13T16:16:55.713+00:00","url":"https://junglewise.ai/threats/cve-2026-44289-protobufjs-uncontrolled-recursion-in-protobuf-decoding"},{"cve":"CVE-2026-44288","cvss":5.3,"epss":0.0033,"slug":"cve-2026-44288-protobufjs-validation-bypass-via-overlong-utf-8-sequences","title":"protobufjs validation bypass via overlong UTF-8 sequences","severity":"medium","exploited":false,"published_at":"2026-05-13T16:16:55.587+00:00","url":"https://junglewise.ai/threats/cve-2026-44288-protobufjs-validation-bypass-via-overlong-utf-8-sequences"},{"cve":"CVE-2026-41242","cvss":9.8,"epss":0.0099,"slug":"cve-2026-41242-protobufjs-code-injection-in-protobuf-definitions","title":"protobufjs code injection in protobuf definitions","severity":"critical","exploited":false,"published_at":"2026-04-18T17:16:13.983+00:00","url":"https://junglewise.ai/threats/cve-2026-41242-protobufjs-code-injection-in-protobuf-definitions"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"Protobufjs Protobuf.js","slug":"protobuf-js","vendor":{"name":"Protobufjs","slug":"protobufjs","url":"https://junglewise.ai/threats/vendors/protobufjs"},"aliases":[],"description":"A pure JavaScript implementation of Protocol Buffers for encoding and decoding binary message formats.","url":"https://junglewise.ai/threats/technologies/protobuf-js"},"most_severe":[{"cve":"CVE-2026-41242","cvss":9.8,"epss":0.0099,"slug":"cve-2026-41242-protobufjs-code-injection-in-protobuf-definitions","title":"protobufjs code injection in protobuf definitions","severity":"critical","exploited":false,"published_at":"2026-04-18T17:16:13.983+00:00","url":"https://junglewise.ai/threats/cve-2026-41242-protobufjs-code-injection-in-protobuf-definitions"},{"cve":"CVE-2026-44293","cvss":8.8,"epss":0.0073,"slug":"cve-2026-44293-protobufjs-code-injection-in-toobject-function-generation","title":"protobufjs code injection in toObject function generation","severity":"high","exploited":false,"published_at":"2026-05-13T16:16:56.253+00:00","url":"https://junglewise.ai/threats/cve-2026-44293-protobufjs-code-injection-in-toobject-function-generation"},{"cve":"CVE-2026-44291","cvss":8.1,"epss":0.0042,"slug":"cve-2026-44291-protobuf-js-code-injection-via-prototype-pollution-gadget","title":"protobufjs code injection via prototype pollution in lookup tables","severity":"high","exploited":false,"published_at":"2026-05-13T16:16:55.987+00:00","url":"https://junglewise.ai/threats/cve-2026-44291-protobuf-js-code-injection-via-prototype-pollution-gadget"},{"cve":"CVE-2026-44289","cvss":7.5,"epss":0.0068,"slug":"cve-2026-44289-protobufjs-uncontrolled-recursion-in-protobuf-decoding","title":"protobufjs uncontrolled recursion in protobuf decoding","severity":"high","exploited":false,"published_at":"2026-05-13T16:16:55.713+00:00","url":"https://junglewise.ai/threats/cve-2026-44289-protobufjs-uncontrolled-recursion-in-protobuf-decoding"},{"cve":"CVE-2026-44290","cvss":7.5,"epss":0.005,"slug":"cve-2026-44290-protobufjs-prototype-pollution-in-schema-parsing","title":"protobufjs prototype pollution in schema option handling","severity":"high","exploited":false,"published_at":"2026-05-13T16:16:55.847+00:00","url":"https://junglewise.ai/threats/cve-2026-44290-protobufjs-prototype-pollution-in-schema-parsing"},{"cve":"CVE-2026-48712","cvss":7.5,"epss":0.0046,"slug":"cve-2026-48712-protobufjs-uncontrolled-recursion-in-json-conversion","title":"protobufjs uncontrolled recursion in JSON conversion","severity":"high","exploited":false,"published_at":"2026-06-22T18:16:39.64+00:00","url":"https://junglewise.ai/threats/cve-2026-48712-protobufjs-uncontrolled-recursion-in-json-conversion"},{"cve":"CVE-2026-45740","cvss":5.3,"epss":0.0046,"slug":"cve-2026-45740-protobufjs-uncontrolled-recursion-in-json-descriptor-expansion","title":"protobufjs uncontrolled recursion in JSON descriptor expansion","severity":"medium","exploited":false,"published_at":"2026-05-13T16:17:00.52+00:00","url":"https://junglewise.ai/threats/cve-2026-45740-protobufjs-uncontrolled-recursion-in-json-descriptor-expansion"},{"cve":"CVE-2026-54270","cvss":5.3,"epss":0.004,"slug":"cve-2026-54270-protobufjs-memory-amplification-via-unknown-field-preservation","title":"protobufjs memory amplification via unknown field preservation","severity":"medium","exploited":false,"published_at":"2026-06-22T18:16:45.48+00:00","url":"https://junglewise.ai/threats/cve-2026-54270-protobufjs-memory-amplification-via-unknown-field-preservation"},{"cve":"CVE-2026-54269","cvss":5.3,"epss":0.004,"slug":"cve-2026-54269-protobufjs-property-shadowing-and-uncontrolled-recursion","title":"protobufjs property shadowing and uncontrolled recursion","severity":"medium","exploited":false,"published_at":"2026-06-22T18:16:45.35+00:00","url":"https://junglewise.ai/threats/cve-2026-54269-protobufjs-property-shadowing-and-uncontrolled-recursion"},{"cve":"CVE-2026-44294","cvss":5.3,"epss":0.004,"slug":"cve-2026-44294-protobuf-js-denial-of-service-via-crafted-field-names","title":"protobufjs denial of service via crafted field names in generated code","severity":"medium","exploited":false,"published_at":"2026-05-13T16:16:56.38+00:00","url":"https://junglewise.ai/threats/cve-2026-44294-protobuf-js-denial-of-service-via-crafted-field-names"}],"generated_at":"2026-09-26T09:11:00.170868+00:00"}