CVE-2026-85717
AsyncHttpClient: Client-wide realm credentials re-sent to a cross-origin redirect target
At a glance
- Source
- NVD
- EPSS
- EPSS 0.53 % · percentile 45 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Awaiting Analysis
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.
Weaknesses (CWE)
- CWE-200 — Exposure of Sensitive Information to an Unauthorized Actor
- CWE-522 — Insufficiently Protected Credentials
References
- https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-f8m2-889x-vw4x
- https://github.com/AsyncHttpClient/async-http-client/pull/2224
- https://github.com/AsyncHttpClient/async-http-client/commit/43db7bba81430cbd61ec2dc2c7be464e0ff6a0ff
- https://github.com/AsyncHttpClient/async-http-client/commit/b66757bec34def2e9867bb2b77bd848b1112abb4
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N | GitHub_M |
| CVSS 3.1 | MEDIUM 6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N | NVD · security-advisories@github.com (Secondary) |
Advisories
- GHSA-f8m2-889x-vw4x — AsyncHttpClient re-sends client-wide realm credentials to a cross-origin redirect target
European references
- ENISA EUVD · EUVD-2026-81905
- GCVE · GCVE-0-2026-85717
Affected products
| Product | Versions |
|---|---|
| AsyncHttpClient · async-http-client | affected >= 2.14.5, < 2.16.1 ; affected >= 3.0.9, < 3.0.12 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |