UBUNTU-CVE-2026-45300 (CVE-2026-45300)
Vulnerability from osv_ubuntu – Published: 2026-06-05 20:17 – Updated: 2026-08-20 19:49 – Source website
VLAI
Details
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Versions on the 2.x branch prior to 2.15.0 and the 3.x branch prior to 3.0.10 leak Cookie headers to cross-origin redirect targets. When following a redirect to a different origin, the propagatedHeaders() method in Redirect30xInterceptor.java strips Authorization and Proxy-Authorization headers but does not strip the Cookie header, causing session cookies and other sensitive cookie values to be sent to attacker-controlled servers. Versions 2.15.0 and 3.0.10 patch the issue.
Severity
7.4 (High)
N/A (UNKNOWN)
{
"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": "2.12.3-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "async-http-client",
"purl": "pkg:deb/ubuntu/async-http-client@2.12.3-1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.12.3-1"
]
},
{
"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. Versions on the 2.x branch prior to 2.15.0 and the 3.x branch prior to 3.0.10 leak `Cookie` headers to cross-origin redirect targets. When following a redirect to a different origin, the `propagatedHeaders()` method in `Redirect30xInterceptor.java` strips `Authorization` and `Proxy-Authorization` headers but does not strip the `Cookie` header, causing session cookies and other sensitive cookie values to be sent to attacker-controlled servers. Versions 2.15.0 and 3.0.10 patch the issue.",
"id": "UBUNTU-CVE-2026-45300",
"modified": "2026-08-20T19:49:00Z",
"published": "2026-06-05T20:17:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-45300"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-45300"
},
{
"type": "REPORT",
"url": "https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-fmxf-pm6p-7xgm"
},
{
"type": "REPORT",
"url": "https://github.com/AsyncHttpClient/async-http-client/commit/3b0e3e9e"
},
{
"type": "REPORT",
"url": "https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.10"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-45300"
]
}
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Sightings
| Author | Source | Type | Date | Other |
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vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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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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