---
id: CVE-2026-85717
title: >-
  The AsyncHttpClient (AHC) library allows Java applications to easily execute
  HTTP requests and asynchronously process HTTP responses
summary: >-
  The AsyncHttpClient (AHC) library allows Java applications to easily execute
  HTTP requests and asynchronously process HTTP responses. From 2.14.5 to 2.16.0
  and from 3.0.9 to 3.0.11, a client configured with a client-wide Realm and
  redire…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-200
  - CWE-522
vendor: AsyncHttpClient
product: async-http-client
affected:
  - 'async-http-client >= 2.14.5, < 2.16.1'
  - 'async-http-client >= 3.0.9, < 3.0.12'
patched:
  - 'org.asynchttpclient:async-http-client 3.0.12'
  - 'org.asynchttpclient:async-http-client 2.16.1'
published: '2026-09-17'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T19:19:40.640'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85717'
references:
  - url: >-
      https://github.com/AsyncHttpClient/async-http-client/commit/43db7bba81430cbd61ec2dc2c7be464e0ff6a0ff
    label: security-advisories@github.com
  - url: >-
      https://github.com/AsyncHttpClient/async-http-client/commit/b66757bec34def2e9867bb2b77bd848b1112abb4
    label: security-advisories@github.com
  - url: 'https://github.com/AsyncHttpClient/async-http-client/pull/2224'
    label: security-advisories@github.com
  - url: >-
      https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-f8m2-889x-vw4x
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-f8m2-889x-vw4x'
tags:
  - nvd
  - cve.org
  - ghsa
  - maven
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-23T18:32:28.993783Z'
epss: 0.0053
epssPercentile: 0.42491
aliases:
  - GHSA-f8m2-889x-vw4x
ecosystem: maven
ingestedAt: '2026-09-17T16:21:47.712Z'
---

## Overview

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. From 2.14.5 to 2.16.0 and from 3.0.9 to 3.0.11, a client configured with a client-wide Realm and redirect following can disclose credentials after a cross-origin redirect because the Interceptors authentication path falls back to the client configuration after redirect handling clears the per-exchange realm. If the attacker-controlled target returns 401, the client can send Basic or Digest credentials or a Negotiate or NTLM token to that origin. Per-request realms are stripped correctly, and this issue is a residual bypass of the earlier cross-origin credential-stripping fixes. This issue is fixed in versions 2.16.1 and 3.0.12.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-85717)

Affected packages:

- `org.asynchttpclient:async-http-client >= 3.0.9, <= 3.0.11`
- `org.asynchttpclient:async-http-client >= 2.14.5, <= 2.16.0`

Patched in:

- `org.asynchttpclient:async-http-client 3.0.12`
- `org.asynchttpclient:async-http-client 2.16.1`

Source: https://github.com/advisories/GHSA-f8m2-889x-vw4x