UBUNTU-CVE-2026-85717 (CVE-2026-85717)
Vulnerability from osv_ubuntu – Published: 2026-09-17 16:18 – Updated: 2026-09-23 23:36 – Source website
VLAI
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.
Severity
6.8 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libasync-http-client-java",
"binary_version": "1.6.5-2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "async-http-client",
"purl": "pkg:deb/ubuntu/async-http-client@1.6.5-2ubuntu0.1~esm1?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"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": "1.6.5-4"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "async-http-client",
"purl": "pkg:deb/ubuntu/async-http-client@1.6.5-4?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.6.5-4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libasync-http-client-java",
"binary_version": "1.6.5-5"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "async-http-client",
"purl": "pkg:deb/ubuntu/async-http-client@1.6.5-5?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.6.5-4",
"1.6.5-5"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libasync-http-client-java",
"binary_version": "2.6.0-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "async-http-client",
"purl": "pkg:deb/ubuntu/async-http-client@2.6.0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.6.0-1",
"2.6.0-1ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libasync-http-client-java",
"binary_version": "2.12.3-1ubuntu0.22.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "async-http-client",
"purl": "pkg:deb/ubuntu/async-http-client@2.12.3-1ubuntu0.22.04.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.12.2-1",
"2.12.3-1",
"2.12.3-1ubuntu0.22.04.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libasync-http-client-java",
"binary_version": "2.12.3-1ubuntu0.24.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "async-http-client",
"purl": "pkg:deb/ubuntu/async-http-client@2.12.3-1ubuntu0.24.04.1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.12.3-1",
"2.12.3-1ubuntu0.24.04.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libasync-http-client-java",
"binary_version": "2.12.3-1ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "async-http-client",
"purl": "pkg:deb/ubuntu/async-http-client@2.12.3-1ubuntu1.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.12.3-1",
"2.12.3-1ubuntu1",
"2.12.3-1ubuntu1.1"
]
}
],
"aliases": [],
"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.",
"id": "UBUNTU-CVE-2026-85717",
"modified": "2026-09-23T23:36:45Z",
"published": "2026-09-17T16:18:00Z",
"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"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-85717"
]
}
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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