{"id":"UBUNTU-CVE-2026-107227","details":"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.","modified":"2026-10-08T19:47:01.198392640Z","published":"2026-10-08T00:00:00Z","upstream":["CVE-2026-107227"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-107227"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-107227"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-x8v2-478q-2hvg"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/commit/b61637f30327f314b7693418f12ce141ac6b2b30"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/commit/b61637f30327f314b7693418f12ce141ac6b2b30"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.14"}],"affected":[{"package":{"name":"async-http-client","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.5-1","1.6.5-2","1.6.5-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.5-2ubuntu0.1~esm1","binary_name":"libasync-http-client-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107227.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.5-4"],"ecosystem_specific":{"binaries":[{"binary_name":"libasync-http-client-java","binary_version":"1.6.5-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107227.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.5-4","1.6.5-5"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.5-5","binary_name":"libasync-http-client-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107227.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.6.0-1","2.6.0-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.6.0-1ubuntu0.1~esm1","binary_name":"libasync-http-client-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107227.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12.2-1","2.12.3-1","2.12.3-1ubuntu0.22.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libasync-http-client-java","binary_version":"2.12.3-1ubuntu0.22.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107227.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12.3-1","2.12.3-1ubuntu0.24.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libasync-http-client-java","binary_version":"2.12.3-1ubuntu0.24.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107227.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12.3-1","2.12.3-1ubuntu1","2.12.3-1ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.12.3-1ubuntu1.1","binary_name":"libasync-http-client-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107227.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}