Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/AsyncHttpClient/async-http-client/commit/43db7bba81430cbd61ec
- https://github.com/AsyncHttpClient/async-http-client/commit/b66757bec34def2e9867
- https://github.com/AsyncHttpClient/async-http-client/pull/2224
- https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-f8
FAQ
What is CVE-2026-85717?
CVE-2026-85717 is a vulnerability with a CVSS score of 6.8 (MEDIUM). 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 configure...
How severe is CVE-2026-85717?
CVE-2026-85717 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-85717?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.