CVE-2026-26330

ecs-service-connect-agent: Envoy is a high-performance edge/middle/service proxy

CVE-2026-26330 is fixed in ecs-service-connect-agent on 1 platform by ALAS2023-2026-1532 (version v1.34.13.0-1.amzn2023), released March 30, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
n/a
important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0036
29th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
ecs-service-connect-agent · amzn 2023 v1.34.13.0-1.amzn2023 ALAS2023-2026-1532 Mar 30, 2026

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