GHSA-8gq9-2x98-w8hf: protobuf fixed in 4.21.6, 3.20.2, 3.19.5 and 1 more

GHSA-8gq9-2x98-w8hf PUBLISHED CVSS 7.5 HIGH

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

Record from GitHub Advisory Database · Published September 23, 2022

protobuf is fixed in 4.21.6, 3.20.2, 3.19.5 and 1 more (PyPI)

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

Fixed versions

Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.

Package	Ecosystem	Fixed in
protobuf	PyPI	4.21.6, 3.20.2, 3.19.5, 3.18.3

Risk scores

CVSS 3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Vendor	Product	Versions
PyPI	protobuf	0, 3.19.0, 3.20.0
PyPI	protobuf	3.20.0, 4.0.0, 0

Timeline

Sep 23, 2022 CVE Published
Apr 12, 2026 Security Advisory

Query this with the API

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vulnetix vdb vuln GHSA-8gq9-2x98-w8hf
vulnetix vdb fixes GHSA-8gq9-2x98-w8hf

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curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/GHSA-8gq9-2x98-w8hf/fixes/registry"

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