{"id":"CVE-2026-107228","title":"The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses","summary":"The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. From 2.1.0 until 3.0.14, the enabled-by-default cookie store replaces a Cookie header explicitly suppli…","severity":"medium","cvss":6.8,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-287"],"vendor":"AsyncHttpClient","product":"async-http-client","affected":["async-http-client >= 3.0.0, < 3.0.14","async-http-client >= 2.1.0, <= 2.16.1"],"published":"2026-10-07","updated":"2026-10-07","sourceUpdated":"2026-10-07T21:17:14.457","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-107228","references":[{"url":"https://github.com/AsyncHttpClient/async-http-client/commit/fd9763620725126c1c8bb0af1ceb9a7523099a5f","label":"security-advisories@github.com"},{"url":"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.14","label":"security-advisories@github.com"},{"url":"https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-2jwh-9rmr-j4xf","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-07T21:54:15.091Z","slug":"CVE-2026-107228","body":"## Overview\n\nThe AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. From 2.1.0 until 3.0.14, the enabled-by-default cookie store replaces a Cookie header explicitly supplied through setHeader or addHeader whenever the store contributes any cookie for the origin. In a shared client, stored cookies originating from one user can replace a different user's request cookie, causing the request to execute under the wrong session. This bypasses the earlier CVE-2024-53990 remediation, which covered cookies supplied through addCookie but not a directly supplied header. This issue is fixed in version 3.0.14.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":37,"depthScoreParts":{"impact":37.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}