Resource exhaustion in grpc-go - #VU144264
Published: August 19, 2026
Vulnerability identifier: #VU144264
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in the HTTP/2 DATA frame handling logic when processing highly fragmented gRPC stream payloads. A remote attacker can send a large number of tiny HTTP/2 DATA frames across one or more streams to cause a denial of service.
The issue can exhaust heap memory and trigger a runtime panic or out-of-memory condition even when the total payload remains within configured connection and stream flow-control windows.
Affected software
grpc-go
Remediation
Install security update from vendor's website.
grpc-go - update to 1.83.1