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Update dependency protobuf to v3.18.3 [SECURITY]#116

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Update dependency protobuf to v3.18.3 [SECURITY]#116
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renovate/pypi-protobuf-vulnerability

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@renovate renovate Bot commented Apr 8, 2026

This PR contains the following updates:

Package Change Age Confidence
protobuf ==3.0.0==3.18.3 age confidence

Warning

Some dependencies could not be looked up. Check the Dependency Dashboard for more information.


protobuf susceptible to buffer overflow

CVE-2015-5237 / GHSA-jwvw-v7c5-m82h

More information

Details

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

Severity

  • CVSS Score: 8.7 / 10 (High)
  • Vector String: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

This data is provided by the GitHub Advisory Database (CC-BY 4.0).


protobuf-cpp and protobuf-python have potential Denial of Service issue

CVE-2022-1941 / GHSA-8gq9-2x98-w8hf

More information

Details

Summary

A message parsing and memory management vulnerability in ProtocolBuffer’s C++ and Python implementations can trigger an out of memory (OOM) failure when processing a specially crafted message, which could lead to a denial of service (DoS) on services using the libraries.

Reporter: ClusterFuzz

Affected versions: All versions of C++ Protobufs (including Python) prior to the versions listed below.

Severity & Impact

As scored by google
Medium 5.7 - CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Asscored byt NIST
High 7.5 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

A small (~500 KB) malicious payload can be constructed which causes the running service to allocate more than 3GB of RAM.

Proof of Concept

For reproduction details, please refer to the unit test that identifies the specific inputs that exercise this parsing weakness.

Mitigation / Patching

Please update to the latest available versions of the following packages:

  • protobuf-cpp (3.18.3, 3.19.5, 3.20.2, 3.21.6)
  • protobuf-python (3.18.3, 3.19.5, 3.20.2, 4.21.6)

Severity

  • CVSS Score: 7.5 / 10 (High)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

This data is provided by the GitHub Advisory Database (CC-BY 4.0).


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@renovate renovate Bot changed the title Update dependency protobuf to v3.18.3 [SECURITY] Update dependency protobuf to v3.18.3 [SECURITY] - autoclosed Apr 20, 2026
@renovate renovate Bot closed this Apr 20, 2026
@renovate renovate Bot deleted the renovate/pypi-protobuf-vulnerability branch April 20, 2026 18:42
@renovate renovate Bot changed the title Update dependency protobuf to v3.18.3 [SECURITY] - autoclosed Update dependency protobuf to v3.18.3 [SECURITY] Apr 23, 2026
@renovate renovate Bot reopened this Apr 23, 2026
@renovate renovate Bot force-pushed the renovate/pypi-protobuf-vulnerability branch 2 times, most recently from 1875fcb to 16e9ecf Compare April 23, 2026 16:36
@renovate renovate Bot changed the title Update dependency protobuf to v3.18.3 [SECURITY] Update dependency protobuf to v3.18.3 [SECURITY] - autoclosed May 11, 2026
@renovate renovate Bot closed this May 11, 2026
@renovate renovate Bot changed the title Update dependency protobuf to v3.18.3 [SECURITY] - autoclosed Update dependency protobuf to v3.18.3 [SECURITY] May 12, 2026
@renovate renovate Bot reopened this May 12, 2026
@renovate renovate Bot force-pushed the renovate/pypi-protobuf-vulnerability branch 2 times, most recently from 16e9ecf to e770c13 Compare May 12, 2026 15:12
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