{"action":"Upgrade org.asynchttpclient:async-http-client to 2.16.0 (2.x) or 3.0.11 (3.x) or later.","affected":[{"fixed":"3.0.11","introduced":"3.0.0.Beta1"},{"fixed":"2.16.0","introduced":"2.0.0"}],"component":"org.asynchttpclient:async-http-client","cve_ids":["CVE-2026-55688"],"ecosystem":"Maven","epss":0.0033,"exploited":false,"fixed_versions":["3.0.11","2.16.0"],"ghsa_id":"GHSA-m452-q8c9-rg2f","id":"tcs_01M5N947Q60BN6JKZM2KMVZ86Z","modified_at":"2026-09-10T03:51:14.308963751Z","published_at":"2026-08-26T14:35:52Z","references":["https://osv.dev/vulnerability/GHSA-m452-q8c9-rg2f","https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-m452-q8c9-rg2f","https://nvd.nist.gov/vuln/detail/CVE-2026-55688","https://github.com/AsyncHttpClient/async-http-client/pull/2196","https://github.com/AsyncHttpClient/async-http-client/pull/2199","https://github.com/AsyncHttpClient/async-http-client/commit/8e4069cf3c92abe099db5fb13378ac2fe9e1fd3b","https://github.com/AsyncHttpClient/async-http-client/commit/e6955c1e3951cf80e286981d064f6c926ce33f47","https://github.com/AsyncHttpClient/async-http-client","https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.16.0","https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.11","https://lists.debian.org/debian-lts-announce/2026/08/msg00011.html"],"severity":{"label":"medium","score":4},"sources":[{"source":"osv","source_id":"GHSA-m452-q8c9-rg2f","url":"https://osv.dev/vulnerability/GHSA-m452-q8c9-rg2f"}],"summary":"AsyncHttpClient stores cookie for an unrelated domain (cookie tossing) via ThreadSafeCookieStore"}