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CVE-2026-85717

AsyncHttpClient: Client-wide realm credentials re-sent to a cross-origin redirect target

CVSS 3.1 6.8 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-85717

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-85717

Published

async-http-client

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "AsyncHttpClient",
                    "product": "async-http-client",
                    "versions": [
                        {
                            "version": ">= 2.14.5, < 2.16.1",
                            "status": "affected"
                        },
                        {
                            "version": ">= 3.0.9, < 3.0.12",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON