Skip to content
OpenAdvisories
Medium · 5.3 CVE-2026-26330 BIT-envoy-2026-26330EUVD-2026-10806GHSA-c23c-rp3m-vpg3

Envoy global rate limit may crash when the response phase limit is enabled and the response phase request is failed directly

Published Mar 10, 2026 · Updated Mar 10, 2026 · Assigned by GitHub_M

Description

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, At the rate limit filter, if the response phase limit with apply_on_stream_done in the rate limit configuration is enabled and the response phase limit request fails directly, it may crash Envoy. When both the request phase limit and response phase limit are enabled, the safe gRPC client instance will be re-used for both the request phase request and response phase request. But after the request phase request is done, the inner state of the request phase limit request in gRPC client is not cleaned up. When a second limit request is sent at response phase, and the second limit request fails directly, the previous request's inner state may be accessed and result in crash. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.

Affected products

VendorProductAffectedFixed
envoyproxy envoy >= 1.37.0, < 1.37.1, >= 1.36.0, < 1.36.5, >= 1.35.0, < 1.35.9, < 1.34.13 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 ecs-service-connect-agent v1.34.13.0-1.amzn2023 ALAS2023-2026-1532

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/envoyproxy/envoy 1.37.0 — GHSA-c23c-rp3m-vpg3
Go github.com/envoyproxy/envoy >= 1.36.0, <= 1.36.4 — GHSA-c23c-rp3m-vpg3

Advisories 2

References