p PatchFirst

CVE-2026-107281

CVE-2026-107281 · AsyncHttpClient: Connection pool key omits the authenticated principal, so an NTLM or Negotiate connection is reused across identities

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 3.0.13 and 2.16.1, the HTTP/1.1 connection-pool key excludes the authenticated principal for connection-oriented NTLM and Negotiate authentication. A pooled socket authenticated for one request can be reused by a request carrying another principal, and the server executes that later request as the first identity. Basic and Digest are not affected because they authenticate each request. This issue is fixed in versions 3.0.13 and 2.16.1.

CVSS 7.6 · High · EPSS 0.2%

Published
Updated

Stack: system

Affected products and versions

  • async-http-client

    Versions
    • >= 3.0.0, < 3.0.13: 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

Check your server →