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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Wed, 07 Oct 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
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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:
Updated: 2026-10-07T21:09:03.284Z
Reserved: 2026-10-07T14:34:14.817Z
Link: CVE-2026-107232
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Status : Received
Published: 2026-10-07T22:17:03.497
Modified: 2026-10-07T22:17:03.497
Link: CVE-2026-107232
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OpenCVE Enrichment
Updated: 2026-10-07T23:15:08Z