CVE-2026-107229: CWE-384: Session Fixation in AsyncHttpClient async-http-client
Description
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.
CVSS v3.1
Score 4.0medium
Affected software
AsyncHttpClient
async-http-client
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-10-07T14:34:14.817Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac6b3c62cdf04f6567ed5bb
Added to database: 10/07/2026, 21:04:06 UTC
Last updated: 10/07/2026, 21:04:06 UTC
Views: 1
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