CVE-2026-73513

ecs-service-connect-agent: Fixed a heap use-after-free where an untrusted upstream could send HTTP/2 response trailers without the END_STREAM fl...

CVE-2026-73513 is fixed in ecs-service-connect-agent on 1 platform by ALAS2023-2026-2149 (version v1.39.1.0-1.amzn2023), released September 14, 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

0.0049

42nd percentile

Fixed a heap use-after-free where an untrusted upstream could send HTTP/2 response trailers without the END_STREAM flag to an Envoy instance using oghttp2, corrupting stream state and terminating the process.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
ecs-service-connect-agent · amzn 2023	v1.39.1.0-1.amzn2023	ALAS2023-2026-2149	Sep 14, 2026

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