The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.12 and 2.16.1, a proxied ws request is carried through CONNECT, but NettyRequestFactory.newNettyRequest and requestUri decide whether to attach proxy authentication and an absolute-form target only from whether the URI is secure. Because ws is not marked secure, the tunneled WebSocket upgrade sent to the origin includes the proxy's Proxy-Authorization value. Basic credentials are directly recoverable and Digest responses can be replayed or cracked offline. This issue is fixed in versions 3.0.12 and 2.16.1.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
AsyncHttpClient async-http-client affected
Version Status Constraints
>= 3.0.0, <3.0.12 affected —
>= 2.0.0, < 2.16.1 affected —

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Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/AsyncHttpClient/async-http-client/commit/6e9cb75a9b7259353f983fc90ca28b1da3742e18 cve-icon cve-icon
https://github.com/AsyncHttpClient/async-http-client/commit/c4feab0f7f86d61505a48e40d383c8a375a22e18 cve-icon cve-icon
https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.16.1 cve-icon cve-icon
https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.12 cve-icon cve-icon
https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-3wp9-xfwm-rjjf cve-icon cve-icon
History

Wed, 07 Oct 2026 21:45:00 +0000

Type Values Removed Values Added
Description The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.12 and 2.16.1, a proxied ws request is carried through CONNECT, but NettyRequestFactory.newNettyRequest and requestUri decide whether to attach proxy authentication and an absolute-form target only from whether the URI is secure. Because ws is not marked secure, the tunneled WebSocket upgrade sent to the origin includes the proxy's Proxy-Authorization value. Basic credentials are directly recoverable and Digest responses can be replayed or cracked offline. This issue is fixed in versions 3.0.12 and 2.16.1.
Title AsyncHttpClient: WebSocket proxy credentials sent to the origin server over a CONNECT tunnel
Weaknesses CWE-319
CWE-522
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-07T21:28:34.620Z

Reserved: 2026-10-07T15:53:23.586Z

Link: CVE-2026-107285

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-07T22:17:04.637

Modified: 2026-10-07T22:17:04.637

Link: CVE-2026-107285

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-07T23:00:15Z

Weaknesses