CVE-2026-85717 PUBLISHED

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

Assigner: GitHub_M
Reserved: 04.09.2026 Published: 17.09.2026 Updated: 17.09.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS Score: 6.8

Product Status

Vendor AsyncHttpClient
Product async-http-client
Versions
  • Version >= 2.14.5, < 2.16.1 is affected
  • Version >= 3.0.9, < 3.0.12 is affected

References

Problem Types

  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE
  • CWE-522: Insufficiently Protected Credentials CWE