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CVE-2023-1428 — Vulnerability in grpcio — CVE Details

HIGH

gRPC Reachable Assertion issue

Published July 6, 2023Updated September 10, 2026Source: osv

Summary

There exists an vulnerability causing an abort() to be called in gRPC.  The following headers cause gRPC's C++ implementation to abort() when called via http2: te: x (x != trailers) :scheme: x (x != http, https) grpclb_client_stats: x (x == anything) On top of sending one of those headers, a later header must be sent that gets the total header size past 8KB. We recommend upgrading past git commit 2485fa94bd8a723e5c977d55a3ce10b301b437f8 or v1.53 and above.

Advisory Timeline

  • First published July 6, 2023 (1194 days ago).
  • Last revised September 10, 2026 — 1161 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

pip
Update grpcio to 1.53.0 or later
pip install "grpcio>=1.53.0"
Maven
Update io.grpc:grpc-protobuf to 1.53.0 or later
<!-- Update pom.xml dependency version to 1.53.0 for io.grpc:grpc-protobuf -->
Bundler
Update grpc to 1.53.0 or later
gem install grpc -v 1.53.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (3)

Affects 3 ecosystems: maven (1), pypi (1), rubygems (1).

PackageEcosystemAffectedFixed In
grpcio
pypi
1.51.0, 1.51.1, 1.51.3, 1.52.0 (+2 more)1.53.0
io.grpc:grpc-protobuf
maven
1.51.0, 1.51.1, 1.51.3, 1.52.0 (+1 more)1.53.0
grpc
rubygems
1.51.0, 1.52.0, 1.52.0.pre2, 1.52.2 (+1 more)1.53.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

References

Frequently Asked Questions

What is CVE-2023-1428?
gRPC Reachable Assertion issue This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2023-1428?
CVE-2023-1428 affects grpcio, io.grpc:grpc-protobuf and grpc. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2023-1428 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-6628-q6j9-w8vg
PYSEC-2026-1425

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