High
node-ws — security advisory
ws is an open source WebSocket client and server for Node.js. Prior to 8.20.1, the websocket.close() implementation is vulnerable to uninitialized memory disclosure when a TypedArray is passed as the reason argument. This vulnerability is fixed in 8.20.1.
- Products
- node-ws
- Affected versions
- 0.7.2+ds1.349b7460-1, 1.0.1+ds1.e6ddaae4-1, 1.1.0+ds1.e6ddaae4-3build1, 1.1.0+ds1.e6ddaae4-3ubuntu1, 1.1.0+ds1.e6ddaae4-5, 7.2.1-2, 7.2.1-3, 7.4.2+~cs18.0.8-2, 7.5.5+~cs13.0.13-1, 8.11.0+~cs13.7.3-1, 8.11.0+~cs13.7.3-2, 8.18.0+~cs14.5.15-1, 8.18.1+~cs14.18.2-1, 8.19.0+~cs14.19.1-1, 8.20.1+~cs14.19.1-1, 8.21.3+~cs14.19.1-1, 8.5.0+~cs13.3.3-2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-45736
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:13 UTC · Revision 1
Source evidence
ws is an open source WebSocket client and server for Node.js. Prior to 8.20.1, the websocket.close() implementation is vulnerable to uninitialized memory disclosure when a TypedArray is passed as the reason argument. This vulnerability is fixed in 8.20.1.
osv:UBUNTU-CVE-2026-45736
node-ws
Fixed versions: Not specified
node-ws
Fixed versions: Not specified
node-ws
Fixed versions: Not specified
node-ws
Fixed versions: Not specified
node-ws
Fixed versions: Not specified
node-ws
Fixed versions: Not specified
node-ws
Fixed versions: Not specified
node-ws
Fixed versions: Not specified
Complete source record
{
"id": "93b0d8184aeec6887fa12b863cbc4a00860fda956e58242afead150adb5f0f2e",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-45736",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-45736",
"summary": "ws is an open source WebSocket client and server for Node.js. Prior to 8.20.1, the websocket.close() implementation is vulnerable to uninitialized memory disclosure when a TypedArray is passed as the reason argument. This vulnerability is fixed in 8.20.1.",
"evidence": "osv:UBUNTU-CVE-2026-45736",
"products": [
{
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"evidence": "/affected/0/package/name"
},
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"affected_versions": [
{
"value": "0.7.2+ds1.349b7460-1",
"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/0/versions"
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{
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{
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{
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"evidence": "/affected/2/versions"
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"evidence": "/affected/3/versions"
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{
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"evidence": "/affected/3/versions"
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{
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{
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"affected_versions": [
{
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"evidence": "/affected/5/versions"
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{
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"evidence": "/affected/5/versions"
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},
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{
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{
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"evidence": "/affected/6/versions"
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{
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{
"name": {
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"evidence": "/affected/7/package/name"
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"affected_versions": [
{
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"evidence": "/affected/7/versions"
},
{
"value": "8.19.0+~cs14.19.1-1",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-45736",
"aliases": [
"UBUNTU-CVE-2026-45736"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
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{
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{
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"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
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"1.0.1+ds1.e6ddaae4-1"
],
"database_specific": {
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},
"ecosystem_specific": {
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}
},
{
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"package": {
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"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"1.1.0+ds1.e6ddaae4-3build1",
"1.1.0+ds1.e6ddaae4-3ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45736.json"
},
"ecosystem_specific": {
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"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"1.1.0+ds1.e6ddaae4-5",
"7.2.1-2",
"7.2.1-3"
],
"database_specific": {
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},
"ecosystem_specific": {
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"ecosystem": "Ubuntu:22.04:LTS"
},
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"7.5.5+~cs13.0.13-1",
"8.5.0+~cs13.3.3-2"
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"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"8.11.0+~cs13.7.3-1",
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],
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],
"modified": "2026-10-17T12:58:22.751284798Z",
"provider": "osv",
"upstream": [
"CVE-2026-45736"
],
"references": [
"https://ubuntu.com/security/CVE-2026-45736",
"https://www.cve.org/CVERecord?id=CVE-2026-45736",
"https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx",
"https://github.com/websockets/ws/commit/c0327ec15a54d701eb6ccefaa8bef328cfc03086"
]
},
"related_cves": [
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],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 358627,
"published_at": "2026-05-15T15:16:00+00:00"
}