CVE-2026-107226: 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 2.1.0 until 3.0.14, the default ThreadSafeCookieStore does not retain whether a Set-Cookie response used a secure transport. It accepts Secure cookies received over plaintext and permits insecure cookies to overlay or delete existing Secure cookies with matching scope. An attacker controlling a plaintext same-site response can consequently plant, replace, or remove cookie state later sent to an HTTPS origin, enabling session fixation, CSRF-token replacement, or loss of security-relevant state. This issue is fixed in version 3.0.14.
CVSS v3.1
Score 6.8medium
Affected software
AsyncHttpClient
async-http-client
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-10-07T14:34:14.816Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6acd2ba32cdf04f656c1d70c
Added to database: 10/12/2026, 18:49:07 UTC
Last updated: 10/12/2026, 18:49:07 UTC
Views: 1
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