High
ruby-websocket-driver — security advisory
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.
- Products
- ruby-websocket-driver
- Affected versions
- 0.6.3-1, 0.6.3-1build1, 0.6.3-2, 0.6.3-2build1, 0.6.3-2build2, 0.6.3-2build3, 0.6.3-2build4, 0.6.3-3build1, 0.6.3-3build2, 0.6.3-3build3, 0.6.3-3build5, 0.6.3-3build6, 0.6.3-3build7, 0.6.3-3ubuntu1, 0.8.2-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-61666
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:49 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-61666
ruby-websocket-driver
Fixed versions: Not specified
ruby-websocket-driver
Fixed versions: Not specified
ruby-websocket-driver
Fixed versions: Not specified
ruby-websocket-driver
Fixed versions: Not specified
ruby-websocket-driver
Fixed versions: Not specified
ruby-websocket-driver
Fixed versions: Not specified
ruby-websocket-driver
Fixed versions: Not specified
Complete source record
{
"id": "4b36114f320b835e331d9ef4237c22243b093491ed3fbc5ffeca31f7203ad371",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-61666",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-61666",
"summary": "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.",
"evidence": "osv:UBUNTU-CVE-2026-61666",
"products": [
{
"name": {
"value": "ruby-websocket-driver",
"evidence": "/affected/0/package/name"
},
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"affected_versions": [
{
"value": "0.6.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.6.3-1build1",
"evidence": "/affected/0/versions"
},
{
"value": "0.6.3-2",
"evidence": "/affected/0/versions"
},
{
"value": "0.6.3-2build1",
"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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{
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"evidence": "/affected/4/versions"
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{
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{
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{
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},
{
"name": {
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"affected_versions": [
{
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"evidence": "/affected/6/versions"
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]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-61666",
"aliases": [
"UBUNTU-CVE-2026-61666"
],
"metrics": [
{
"type": "CVSS_V4",
"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": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "ruby-websocket-driver",
"purl": "pkg:deb/ubuntu/ruby-websocket-driver?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
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"0.6.3-1build1",
"0.6.3-2",
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],
"database_specific": {
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},
"ecosystem_specific": {
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{
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"package": {
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"purl": "pkg:deb/ubuntu/ruby-websocket-driver?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
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"0.6.3-2build2",
"0.6.3-2build3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61666.json"
},
"ecosystem_specific": {
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}
},
{
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"package": {
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"purl": "pkg:deb/ubuntu/ruby-websocket-driver?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
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"0.6.3-2build4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61666.json"
},
"ecosystem_specific": {
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"package": {
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"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
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"0.6.3-3build2",
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"ecosystem_specific": {
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],
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"purl": "pkg:deb/ubuntu/ruby-websocket-driver?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
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],
"database_specific": {
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},
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},
"versions": [
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],
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},
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}
],
"modified": "2026-10-17T12:59:15.479282256Z",
"provider": "osv",
"upstream": [
"CVE-2026-61666"
],
"references": [
"https://ubuntu.com/security/CVE-2026-61666",
"https://www.cve.org/CVERecord?id=CVE-2026-61666"
]
},
"related_cves": [
{
"value": "CVE-2026-61666",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 359557,
"published_at": "2026-08-17T17:16:00+00:00"
}