{"id":"UBUNTU-CVE-2026-85717","details":"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.","modified":"2026-09-23T23:36:45Z","published":"2026-09-17T16:18:00Z","upstream":["CVE-2026-85717"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-85717"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-85717"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-f8m2-889x-vw4x"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/pull/2224"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/commit/43db7bba81430cbd61ec2dc2c7be464e0ff6a0ff"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/commit/b66757bec34def2e9867bb2b77bd848b1112abb4"}],"affected":[{"package":{"name":"async-http-client","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.5-1","1.6.5-2","1.6.5-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libasync-http-client-java","binary_version":"1.6.5-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-85717.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.5-4"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.5-4","binary_name":"libasync-http-client-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-85717.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.5-4","1.6.5-5"],"ecosystem_specific":{"binaries":[{"binary_name":"libasync-http-client-java","binary_version":"1.6.5-5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-85717.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.6.0-1","2.6.0-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.6.0-1ubuntu0.1~esm1","binary_name":"libasync-http-client-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-85717.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12.2-1","2.12.3-1","2.12.3-1ubuntu0.22.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.12.3-1ubuntu0.22.04.1","binary_name":"libasync-http-client-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-85717.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12.3-1","2.12.3-1ubuntu0.24.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libasync-http-client-java","binary_version":"2.12.3-1ubuntu0.24.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-85717.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12.3-1","2.12.3-1ubuntu1","2.12.3-1ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.12.3-1ubuntu1.1","binary_name":"libasync-http-client-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-85717.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}