Session Fixation Affecting org.asynchttpclient:async-http-client package, versions [2.16.0,3.0.14)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published8 Oct 2026
- disclosed7 Oct 2026
- creditUnknown
Introduced: 7 Oct 2026
NewCVE-2026-107229 (opens in a new tab)How to fix?
Upgrade org.asynchttpclient:async-http-client to version 3.0.14 or higher.
Overview
org.asynchttpclient:async-http-client is a maven plugin for the Async Http Client (AHC) classes.
Affected versions of this package are vulnerable to Session Fixation incomplete validation of the ThreadSafeCookieStore process. An attacker can inject unauthorized cookies across trust domains by exploiting improper domain attribute checks, potentially leading to session fixation or unauthorized access.
Workaround
Users who are not able to upgrade to the fixed version are advised to use a separate AsyncHttpClient instance per trust domain, so no cookie store spans them; or disable the cookie store with setCookieStore(null); or supply a CookieStore that applies the checks above.