Technology · Protobufjs
Protobufjs Protobuf.js vulnerabilities
Updated . Rebuilt every hour.
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.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 1
- Exploited in the wild
- 0
About Protobufjs Protobuf.js
A pure JavaScript implementation of Protocol Buffers for encoding and decoding binary message formats.
Latest Protobufjs Protobuf.js vulnerabilities
- CVE-2026-54270: protobufjs memory amplification via unknown field preservationmediumCVSS 5.3EPSS 0.4%
- CVE-2026-54269: protobufjs property shadowing and uncontrolled recursionmediumCVSS 5.3EPSS 0.4%
- CVE-2026-48712: protobufjs uncontrolled recursion in JSON conversionhighCVSS 7.5EPSS 0.5%
- CVE-2026-45740: protobufjs uncontrolled recursion in JSON descriptor expansionmediumCVSS 5.3EPSS 0.5%
- CVE-2026-44294: protobufjs denial of service via crafted field names in generated codemediumCVSS 5.3EPSS 0.4%
- CVE-2026-44293: protobufjs code injection in toObject function generationhighCVSS 8.8EPSS 0.7%
- CVE-2026-44291: protobufjs code injection via prototype pollution in lookup tableshighCVSS 8.1EPSS 0.4%
- CVE-2026-44290: protobufjs prototype pollution in schema option handlinghighCVSS 7.5EPSS 0.5%
- CVE-2026-44289: protobufjs uncontrolled recursion in protobuf decodinghighCVSS 7.5EPSS 0.7%
- CVE-2026-44288: protobufjs validation bypass via overlong UTF-8 sequencesmediumCVSS 5.3EPSS 0.3%
- CVE-2026-41242: protobufjs code injection in protobuf definitionscriticalCVSS 9.8EPSS 1.0%
Most severe Protobufjs Protobuf.js vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-41242: protobufjs code injection in protobuf definitionscriticalCVSS 9.8EPSS 1.0%
- CVE-2026-44293: protobufjs code injection in toObject function generationhighCVSS 8.8EPSS 0.7%
- CVE-2026-44291: protobufjs code injection via prototype pollution in lookup tableshighCVSS 8.1EPSS 0.4%
- CVE-2026-44289: protobufjs uncontrolled recursion in protobuf decodinghighCVSS 7.5EPSS 0.7%
- CVE-2026-44290: protobufjs prototype pollution in schema option handlinghighCVSS 7.5EPSS 0.5%
- CVE-2026-48712: protobufjs uncontrolled recursion in JSON conversionhighCVSS 7.5EPSS 0.5%
- CVE-2026-45740: protobufjs uncontrolled recursion in JSON descriptor expansionmediumCVSS 5.3EPSS 0.5%
- CVE-2026-54270: protobufjs memory amplification via unknown field preservationmediumCVSS 5.3EPSS 0.4%
- CVE-2026-54269: protobufjs property shadowing and uncontrolled recursionmediumCVSS 5.3EPSS 0.4%
- CVE-2026-44294: protobufjs denial of service via crafted field names in generated codemediumCVSS 5.3EPSS 0.4%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/protobuf-js.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Protobufjs Protobuf.js vulnerabilities", https://junglewise.ai/threats/technologies/protobuf-js, 26 September 2026.