🛡️ CVE-2021-36153 — grpc-swift

🟠 CVSS 8.0 — High ✅ No Known Exploit OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Incomplete Internal State Distinction in GRPCWebToHTTP2ServerCodec

Impact

Affected gRPC Swift servers are vulnerable to precondition failures when parsing certain gRPC Web requests. This may lead to a denial of service.

Patches

The problem has been fixed in 1.2.0.

Workarounds

No workaround is available. Users must upgrade.

Affected software

CVE-2021-36153 is recorded against 1 package.

  • github.com/grpc/grpc-swift

Timeline and source

Published on 9 June 2023 and last revised on 8 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Advisory)
bugs.chromium.org (Web)
github.com (Package)
github.com (Web)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2023-06-09
Updated 2026-08-12
Modified 2026-07-08
Fix URL N/A

Affected Packages

Software From version Fixed in
github.com/grpc/grpc-swift

Similar Threats

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