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High

protobuf allows remote authenticated attackers to cause a heap-based buffer overflow.

  • Disclosed: 25.09.2017
  • Updated: 11.10.2026 13:19

protobuf allows remote authenticated attackers to cause a heap-based buffer overflow.

Affected software

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PlatformPackageVulnerable versionsFixed in
Composer package google/protobuf < 3.4.0 3.4.0
Java / Kotlin (Maven) com.google.protobuf:protobuf-parent < 3.4.0 3.4.0
.NET (NuGet) Google.Protobuf < 3.4.0 3.4.0
Python (PyPI) protobuf < 3.4.0 3.4.0

References

CVSS score 8.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-787
Platform
Composer, Java / Kotlin (Maven), .NET (NuGet), Python (PyPI)
Package
google/protobuf, com.google.protobuf:protobuf-parent, Google.Protobuf
Disclosed
25.09.2017
Updated
11.10.2026 13:19

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2017-150 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-jwvw-v7c5-m82h - CC BY 4.0

OSV / GitHub Advisory Database - PYSEC-2017-65 - PyPA Advisory Database; CC BY 4.0

Vulnerability history: protobuf

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
5
First → latest
09.2017 01.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 5

Disclosures per year

  1. protobuf affected by a JSON recursion depth bypass
    High CVE-2026-0994 >= 6.30.0rc1, < 6.33.5, < 5.29.6 6.33.5, 5.29.6
  2. protobuf-python has a potential Denial of Service issue
    High CVE-2025-4565 < 4.25.8, >= 5.26.0rc1, < 5.29.5, >= 6.30.0rc1, < 6.31.1 4.25.8, 5.29.5, 6.31.1
  3. protobuf-cpp and protobuf-python have potential Denial of Service issue
    High · 7.5 CVE-2022-1941 < 3.18.3, >= 3.19.0, < 3.19.5, >= 3.20.0, < 3.20.2, >= 4.0.0, < 4.21.6 3.18.3, 3.19.5, 3.20.2, 4.21.6
  4. Nullptr dereference when a null char is present in a proto symbol. The symbol is parsed incorrectly, leading to an unchecked call into the proto file's name during generation of the resulting error me
    High · 7.5 CVE-2021-22570 < 3.15.0 3.15.0
  5. protobuf allows remote authenticated attackers to cause a heap-based buffer overflow. this entry
    High · 8.8 CVE-2015-5237 < 3.4.0 3.4.0

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