[ CVE-2026-107228 · Published 7 Oct 2026 ]
AsyncHttpClient CookieStore Silently Overrides Caller's Explicit Cookie Header via setHeader (Bypass of CVE-2024-53990 Fix)
CVSS 6.8
EPSS <1%Fix available
[ Description ]Official description
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 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.
[ Fixes ]Fixes and patches
- org.asynchttpclient:async-http-client 3.0.14Fixed version · GitHub Advisories · maven package org.asynchttpclient:async-http-client: upgrade to 3.0.14 or later (affected >= 3.0.0, <= 3.0.13)
[ Packages ]Affected open-source packages
- org.asynchttpclient:async-http-client mavenAffected >= 3.0.0, <= 3.0.13 · fixed in 3.0.14 · GHSA-2jwh-9rmr-j4xf
- org.asynchttpclient:async-http-client mavenAffected >= 2.1.0, <= 2.16.1 · GHSA-2jwh-9rmr-j4xf