What is CVE-2023-32731?

CVE-2023-32731 is a high-severity vulnerability in Google Grpc, classified under Expected Behavior Violation. CVSS score: 7.4/10. Published 2023-06-09.

How severe is CVE-2023-32731?

High severity. CVSS v3 base score is 7.4 out of 10.

Is CVE-2023-32731 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Google Grpc

CVE-2023-32731

When gRPC HTTP2 stack raised a header size exceeded error, it skipped parsing the rest of the HPACK frame. This caused any HPACK table mutations to also be skipped, resulting in a desynchronization of HPACK tables between sender and receiv…

EPSS: 0.001 (22.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

Google Grpc — versions 1.53

Weakness classification (CWE)

CWE-440 — Expected Behavior Violation

Public proof-of-concept exploits

gokusan92/SecureGrpc

References

Frequently asked questions

What is CVE-2023-32731?: CVE-2023-32731 is a high-severity vulnerability in Google Grpc, classified under Expected Behavior Violation. CVSS score: 7.4/10. Published 2023-06-09.
How severe is CVE-2023-32731?: High severity. CVSS v3 base score is 7.4 out of 10.
Is CVE-2023-32731 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.