🛡️ CVE-2024-7246 — grpc

🟡 CVSS 5.3 — Medium ⚠️ Exploit Public CWE-440 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

It's possible for a gRPC client communicating with a HTTP/2 proxy to poison the HPACK table between the proxy and the backend such that other clients see failed requests. It's also possible to use this vulnerability to leak other clients HTTP header keys, but not values.

This occurs because the error status for a misencoded header is not cleared between header reads, resulting in subsequent (incrementally indexed) added headers in the first request being poisoned until cleared from the HPACK table.

Please update to a fixed version of gRPC as soon as possible. This bug has been fixed in 1.58.3, 1.59.5, 1.60.2, 1.61.3, 1.62.3, 1.63.2, 1.64.3, 1.65.4.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.

Affected software

CVE-2024-7246 is recorded against 1 package.

  • grpc (from 1.65.0 up to 1.65.4)

Timeline and source

Published on 6 August 2024 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com

CVE-2024-7246 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE CWE-440
Public Exploit ⚠️ Yes
Source NVD
Published 2024-08-06
Updated 2026-08-11
Modified 2026-06-17

Affected Packages

Software From version Fixed in
grpc 1.65.0 1.65.4

References

Exploit, Issue Tracking, Patch https://github.com/grpc/grpc/issues/36245

Similar Threats

Exploit Protection

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