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.
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History
Fri, 09 Oct 2026 07:45:00 +0000
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Asynchttpclient Project
Asynchttpclient Project async-http-client |
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Asynchttpclient Project
Asynchttpclient Project async-http-client |
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threat_severity
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threat_severity
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Thu, 08 Oct 2026 15:15:00 +0000
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ssvc
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Wed, 07 Oct 2026 21:30:00 +0000
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| 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. | |
| Title | AsyncHttpClient: Origin credentials sent in cleartext to a proxy that rejects the CONNECT | |
| Weaknesses | CWE-319 CWE-441 CWE-522 |
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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-10-07T21:09:03.284Z
Updated: 2026-10-08T14:01:19.523Z
Reserved: 2026-10-07T14:34:14.817Z
Link: CVE-2026-107232
Updated: 2026-10-08T14:01:15.365Z
Status : Awaiting Analysis
Published: 2026-10-07T22:17:03.497
Modified: 2026-10-08T20:35:31.200
Link: CVE-2026-107232