Technology · npm
protobufjs (npm) vulnerabilities
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Junglewise Threat Intelligence has tracked 17 vulnerabilities in protobufjs (npm): 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-2026-59876, was published on 20 July 2026.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 1
- Exploited in the wild
- 0
About protobufjs (npm)
JavaScript implementation of Protocol Buffers for serializing and deserializing structured data.
Latest protobufjs (npm) vulnerabilities
- CVE-2026-59876: protobufjs prototype mutation in Text Format string map parsingmediumCVSS 4.8EPSS 0.4%
- CVE-2026-59877: protobufjs infinite loop in .proto option parsingmediumCVSS 5.3EPSS 0.7%
- 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-2026-44293: protobufjs code injection in toObject function generationhighCVSS 8.8EPSS 0.7%
- CVE-2026-44292: protobufjs prototype pollution in generated message constructorsmediumCVSS 5.3EPSS 0.3%
- 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 0.8%
- CVE-2023-36665: protobufjs Prototype Pollution via untrusted protobuf messageslowCVSS 3.1EPSS 1.7%
- CVE-2022-25878: protobufjs prototype pollution vulnerabilitylowCVSS 3.1EPSS 2.3%
- protobufjs denial of service in message parserinfo
- CVE-2018-3738: protobufjs regular expression denial of servicelowCVSS 3.1EPSS 1.0%
Most severe protobufjs (npm) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-41242: protobufjs code injection in protobuf definitionscriticalCVSS 9.8EPSS 0.8%
- 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-2026-59877: protobufjs infinite loop in .proto option parsingmediumCVSS 5.3EPSS 0.7%
- 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%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 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 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many protobufjs (npm) vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/protobufjs)<a href="https://junglewise.ai/threats/technologies/protobufjs"><img src="https://junglewise.ai/threats/technologies/protobufjs/badge.svg" alt="protobufjs (npm) vulnerabilities" /></a>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/protobufjs.json, and this page as text at https://junglewise.ai/threats/technologies/protobufjs.md, 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 (npm) vulnerabilities", https://junglewise.ai/threats/technologies/protobufjs, 13 November 2026.