Low
async-http-client — security advisory
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.12 and 2.16.1, WebSocketHandler.upgrade aborts a handshake whose Sec-WebSocket-Accept value is missing or invalid but continues into pipeline installation and onOpen delivery. Frames coalesced with the invalid 101 response can be decoded and delivered from a peer that did not prove the handshake, although the request future fails and the channel closes. This issue is fixed in versions 3.0.12 and 2.16.1.
- Products
- async-http-client
- Affected versions
- 1.6.5-1, 1.6.5-2, 1.6.5-2ubuntu0.1~esm1, 1.6.5-4, 1.6.5-5, 2.12.2-1, 2.12.3-1, 2.12.3-1ubuntu0.22.04.1, 2.12.3-1ubuntu0.24.04.1, 2.12.3-1ubuntu1, 2.12.3-1ubuntu1.1, 2.6.0-1, 2.6.0-1ubuntu0.1~esm1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-107284
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:53 UTC · Revision 1
Source evidence
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.12 and 2.16.1, WebSocketHandler.upgrade aborts a handshake whose Sec-WebSocket-Accept value is missing or invalid but continues into pipeline installation and onOpen delivery. Frames coalesced with the invalid 101 response can be decoded and delivered from a peer that did not prove the handshake, although the request future fails and the channel closes. This issue is fixed in versions 3.0.12 and 2.16.1.
osv:UBUNTU-CVE-2026-107284
async-http-client
Fixed versions: Not specified
async-http-client
Fixed versions: Not specified
async-http-client
Fixed versions: Not specified
async-http-client
Fixed versions: Not specified
async-http-client
Fixed versions: Not specified
async-http-client
Fixed versions: Not specified
async-http-client
Fixed versions: Not specified
async-http-client
Fixed versions: Not specified
Complete source record
{
"id": "12482698a634fa772afc41893e611ecaadab5499017838829ecf2bf940e858d5",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-107284",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-107284",
"summary": "The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.12 and 2.16.1, WebSocketHandler.upgrade aborts a handshake whose Sec-WebSocket-Accept value is missing or invalid but continues into pipeline installation and onOpen delivery. Frames coalesced with the invalid 101 response can be decoded and delivered from a peer that did not prove the handshake, although the request future fails and the channel closes. This issue is fixed in versions 3.0.12 and 2.16.1.",
"evidence": "osv:UBUNTU-CVE-2026-107284",
"products": [
{
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"evidence": "/affected/0/package/name"
},
"prerequisites": [],
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{
"value": "1.6.5-1",
"evidence": "/affected/0/versions"
},
{
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"evidence": "/affected/0/versions"
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{
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{
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{
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{
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{
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"evidence": "/affected/7/versions"
},
{
"value": "2.12.3-1ubuntu1.1",
"evidence": "/affected/7/versions"
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],
"severity": "low",
"structured": {
"id": "UBUNTU-CVE-2026-107284",
"aliases": [
"UBUNTU-CVE-2026-107284"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
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"events": [
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},
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{
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"purl": "pkg:deb/ubuntu/async-http-client?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"1.6.5-4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107284.json"
},
"ecosystem_specific": {
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"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
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],
"database_specific": {
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},
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"2.6.0-1ubuntu0.1~esm1"
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"database_specific": {
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],
"modified": "2026-10-17T12:59:47.242549019Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2026-107284",
"https://www.cve.org/CVERecord?id=CVE-2026-107284",
"https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-rwhr-j9rv-85f8",
"https://github.com/AsyncHttpClient/async-http-client/commit/75a278550aa9a980009d022fb4e635f9c8738c03",
"https://github.com/AsyncHttpClient/async-http-client/commit/ccdcaa627db6d96dcc42105212cb3ba5048bd7f9",
"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.16.1",
"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.12"
]
},
"related_cves": [
{
"value": "CVE-2026-107284",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 359769,
"published_at": "2026-10-07T22:17:00+00:00"
}