Technology · Google
Google Protobuf vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 4 vulnerabilities in Google Protobuf: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-54451, was published on 17 September 2026.
- Last 7 days
- 0
- Last 90 days
- 1
- Critical, all time
- 0
- Exploited in the wild
- 0
About Google Protobuf
A language-neutral, platform-neutral, extensible mechanism for serializing structured data.
Latest Google Protobuf vulnerabilities
- CVE-2026-54451: Elixir protobuf is a pure Elixir implementation of Google Protobuf. From 0.8.0 until 0.16.1, services that decode…highCVSS 8.2EPSS 0.5%
- CVE-2026-6409: Google Protobuf DoS via negative varints or deep recursion in PHPhighCVSS 7.1
- CVE-2026-0994: Google Protobuf denial of service in Python json_format.ParseDicthighCVSS 7.5EPSS 0.7%
- CVE-2015-5237: Google Protobuf heap buffer overflowhighCVSS 8.8EPSS 5.0%
Most severe Google Protobuf vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2015-5237: Google Protobuf heap buffer overflowhighCVSS 8.8EPSS 5.0%
- CVE-2026-54451: Elixir protobuf is a pure Elixir implementation of Google Protobuf. From 0.8.0 until 0.16.1, services that decode…highCVSS 8.2EPSS 0.5%
- CVE-2026-0994: Google Protobuf denial of service in Python json_format.ParseDicthighCVSS 7.5EPSS 0.7%
- CVE-2026-6409: Google Protobuf DoS via negative varints or deep recursion in PHPhighCVSS 7.1
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 | 1 | 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.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, "Google Protobuf vulnerabilities", https://junglewise.ai/threats/technologies/protobuf, 26 September 2026.