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CVE-2026-107232

CVE-2026-107232 · AsyncHttpClient: Origin credentials sent in cleartext to a proxy that rejects the CONNECT

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 7.5 · High · EPSS 0.2%

Published
Updated

Stack: system

Affected products and versions

  • async-http-client

    Versions
    • >= 3.0.0, < 3.0.12: Affected
    • >= 2.0.0, < 2.16.1: Affected

    No fix published

  • async-http-client Debian:12

    Versions
    • 2.12.3-1
    • 2.12.3-1+deb12u1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • async-http-client Ubuntu:Pro:14.04:LTS

    Versions
    • 1.6.5-1
    • 1.6.5-2
    • 1.6.5-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • async-http-client Ubuntu:16.04:LTS

    Versions
    • 1.6.5-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • async-http-client Ubuntu:18.04:LTS

    Versions
    • 1.6.5-4
    • 1.6.5-5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • async-http-client Ubuntu:Pro:20.04:LTS

    Versions
    • 2.6.0-1
    • 2.6.0-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • async-http-client Ubuntu:22.04:LTS

    Versions
    • 2.12.2-1
    • 2.12.3-1
    • 2.12.3-1ubuntu0.22.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • async-http-client Ubuntu:24.04:LTS

    Versions
    • 2.12.3-1
    • 2.12.3-1ubuntu0.24.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • async-http-client Ubuntu:26.10

    Versions
    • 2.12.3-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • async-http-client Ubuntu:26.04:LTS

    Versions
    • 2.12.3-1
    • 2.12.3-1ubuntu1
    • 2.12.3-1ubuntu1.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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