Resource Exhaustion Affecting async-http-client package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-ECHOLATEST-ASYNCHTTPCLIENT-20571240
- published8 Oct 2026
- disclosed7 Oct 2026
Introduced: 7 Oct 2026
NewCVE-2026-107227 (opens in a new tab)How to fix?
There is no fixed version for Echo:latest async-http-client.
NVD Description
Note: Versions mentioned in the description apply only to the upstream async-http-client package and not the async-http-client package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. From 2.2.0 until 3.0.14, WebSocket permessage-deflate decompression is unbounded when compression is enabled. The inbound pipeline aggregates compressed frames before WebSocketClientCompressionHandler inflates them, so webSocketMaxFrameSize and webSocketMaxBufferSize do not bound decompressed output. A malicious WebSocket peer can send a small compressed message that expands to a very large Netty buffer and exhausts JVM heap. This issue is fixed in version 3.0.14.
References
- https://advisory.echohq.com/cve/CVE-2026-107227
- https://github.com/AsyncHttpClient/async-http-client/commit/b61637f30327f314b7693418f12ce141ac6b2b30
- https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.14
- https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-x8v2-478q-2hvg