ubuntu-cve-2026-61666
Vulnerability from osv_ubuntu
Published
2026-08-17 17:16
Modified
2026-08-19 11:06
Summary
Details
websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server() passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when the application does not catch the error from parse(). This issue is fixed in version 0.8.2.
Severity
N/A (UNKNOWN)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ruby-websocket-driver",
"binary_version": "0.6.3-2build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "ruby-websocket-driver",
"purl": "pkg:deb/ubuntu/ruby-websocket-driver@0.6.3-2build1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.3-1",
"0.6.3-1build1",
"0.6.3-2",
"0.6.3-2build1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ruby-websocket-driver",
"binary_version": "0.6.3-2build3"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "ruby-websocket-driver",
"purl": "pkg:deb/ubuntu/ruby-websocket-driver@0.6.3-2build3?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.3-2build1",
"0.6.3-2build2",
"0.6.3-2build3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ruby-websocket-driver",
"binary_version": "0.6.3-2build4"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "ruby-websocket-driver",
"purl": "pkg:deb/ubuntu/ruby-websocket-driver@0.6.3-2build4?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.3-2build3",
"0.6.3-2build4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ruby-websocket-driver",
"binary_version": "0.6.3-3build3"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "ruby-websocket-driver",
"purl": "pkg:deb/ubuntu/ruby-websocket-driver@0.6.3-3build3?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.3-3build1",
"0.6.3-3build2",
"0.6.3-3build3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ruby-websocket-driver",
"binary_version": "0.6.3-3build7"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "ruby-websocket-driver",
"purl": "pkg:deb/ubuntu/ruby-websocket-driver@0.6.3-3build7?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.3-3build5",
"0.6.3-3build6",
"0.6.3-3build7"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ruby-websocket-driver",
"binary_version": "0.6.3-3ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "ruby-websocket-driver",
"purl": "pkg:deb/ubuntu/ruby-websocket-driver@0.6.3-3ubuntu1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.3-3ubuntu1"
]
}
],
"aliases": [],
"details": "websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server() passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when the application does not catch the error from parse(). This issue is fixed in version 0.8.2.",
"id": "UBUNTU-CVE-2026-61666",
"modified": "2026-08-19T11:06:32Z",
"published": "2026-08-17T17:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-61666"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-61666"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-61666"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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.
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.
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