CVE-2026-107232: CWE-319: Cleartext Transmission of Sensitive Information in AsyncHttpClient async-http-client
Description
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.12 on 3.x and 2.16.1 on 2.x, the client infers that an HTTP proxy tunnel exists from the last request method rather than the CONNECT result. After a proxy rejects CONNECT, redirect or authentication handlers can write an origin request and its Authorization credentials onto the still-plaintext proxy connection. Basic credentials can be recovered directly, while NTLM responses may be cracked or relayed. This issue is fixed in versions 3.0.12 and 2.16.1.
CVSS v3.1
Score 7.5high
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: 6ac6bac72cdf04f65680ca5e
Added to database: 10/07/2026, 21:33:59 UTC
Last updated: 10/07/2026, 21:33:59 UTC
Views: 1
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