Resource exhaustion in gRPC-go - #VU144260
Published: August 19, 2026
Vulnerability identifier: #VU144260
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 improper resource management in the HTTP/2 transport server implementation when handling rapid client-initiated stream creation and reset sequences. A remote attacker can send a rapid flood of HEADERS followed by RST_STREAM frames to cause a denial of service.
The condition bypasses the HTTP/2 Rapid Reset mitigation because queued control buffer items do not count against the transport response frame threshold, leading to high CPU consumption.
Affected software
gRPC-go
Arista Streaming Telemetry Agent
Arista Extensible Operating System (EOS)
CloudVision Wi-Fi
Arista Streaming Telemetry Agent
Arista Extensible Operating System (EOS)
CloudVision Wi-Fi
Remediation
Install security update from vendor's website.
gRPC-go - update to 1.82.1
Arista Streaming Telemetry Agent - addressed in versions 1.31.17, 1.34.14, 1.37.13, 1.40.13, 1.43.8, 1.45.1, 1.46.0
Arista Extensible Operating System (EOS) - addressed in versions 4.33.9M, 4.34.8M, 4.35.6M, 4.36.2F
CloudVision Wi-Fi - update to 21.4.0M-12
Arista Streaming Telemetry Agent - addressed in versions 1.31.17, 1.34.14, 1.37.13, 1.40.13, 1.43.8, 1.45.1, 1.46.0
Arista Extensible Operating System (EOS) - addressed in versions 4.33.9M, 4.34.8M, 4.35.6M, 4.36.2F
CloudVision Wi-Fi - update to 21.4.0M-12