Session Fixation Affecting async-http-client package, versions *
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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Test your applications- Snyk IDSNYK-ECHOLATEST-ASYNCHTTPCLIENT-20571242
- published8 Oct 2026
- disclosed7 Oct 2026
Introduced: 7 Oct 2026
NewCVE-2026-107229 (opens in a new tab)How to fix?
There is no fixed version for Echo:latest async-http-client.
NVD Description
Note: Versions mentioned in the description apply only to the upstream async-http-client package and not the async-http-client package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. From 2.16.0 until 3.0.14, ThreadSafeCookieStore incompletely validates cookie Domain attributes. Missing private-section and default public-suffix rules, absent A-label normalization, locale-sensitive lowercasing, public-suffix host-only handling, and numeric or IP host checks allow one origin to store a cookie later sent to another origin. Applications sharing one client across trust domains can therefore receive attacker-injected cookies and may be exposed to session fixation. This issue is fixed in version 3.0.14.
References
- https://advisory.echohq.com/cve/CVE-2026-107229
- https://github.com/AsyncHttpClient/async-http-client/commit/7dc5bbc2d0a48aa2a9caf089a626dcfd333168e9
- https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.14
- https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-qjr7-w8pj-pmv9