{"id":"CVE-2026-107284","revision":"a80cd7cbf2584a9482416904d1267162","records":[{"revision":"a80cd7cbf2584a9482416904d1267162","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-107284","aliases":[],"title":"AsyncHttpClient: WebSocket handshake continues after a failed Sec-WebSocket-Accept check","description":"The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.12 and 2.16.1, WebSocketHandler.upgrade aborts a handshake whose Sec-WebSocket-Accept value is missing or invalid but continues into pipeline installation and onOpen delivery. Frames coalesced with the invalid 101 response can be decoded and delivered from a peer that did not prove the handshake, although the request future fails and the channel closes. This issue is fixed in versions 3.0.12 and 2.16.1.","state":0,"publishedAt":"2026-10-07T21:27:03.257+00:00","modifiedAt":"2026-10-08T14:54:57.517+00:00","affected":[{"ecosystem":"Vendor product","name":"async-http-client","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"AsyncHttpClient\",\n                    \"product\": \"async-http-client\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 3.0.0, < 3.0.12\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 2.0.0, < 2.16.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","score":3.7,"severity":"LOW"}],"references":["https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-rwhr-j9rv-85f8","https://github.com/AsyncHttpClient/async-http-client/commit/75a278550aa9a980009d022fb4e635f9c8738c03","https://github.com/AsyncHttpClient/async-http-client/commit/ccdcaa627db6d96dcc42105212cb3ba5048bd7f9","https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.16.1","https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.12"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-107284","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-107284","identifiers":["CVE-2026-107284"]},"retained":false,"historicalAffected":[]}],"coverage":[]}