High
node-socket.io-parser — security advisory
socket.io-parser before 3.4.1 allows attackers to cause a denial of service (memory consumption) via a large packet because a concatenation approach is used.
- Products
- node-socket.io-parser
- Affected versions
- 2.3.1-1, 3.3.0-1, 3.4.0-1, 4.0.2-1, 4.1.1+~3.0.0-1, 4.1.2+~3.0.0-1, 4.2.1+~3.1.0-3, 4.2.1+~3.1.0-4, 4.2.4+~3.1.2-1, 4.2.4+~3.1.2-2
- Fixed versions
- Not specified
- CVEs
- CVE-2020-36049
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:38 UTC · Revision 1
Source evidence
socket.io-parser before 3.4.1 allows attackers to cause a denial of service (memory consumption) via a large packet because a concatenation approach is used.
osv:UBUNTU-CVE-2020-36049
node-socket.io-parser
Fixed versions: Not specified
node-socket.io-parser
Fixed versions: Not specified
node-socket.io-parser
Fixed versions: Not specified
node-socket.io-parser
Fixed versions: Not specified
node-socket.io-parser
Fixed versions: Not specified
node-socket.io-parser
Fixed versions: Not specified
node-socket.io-parser
Fixed versions: Not specified
Complete source record
{
"id": "0c15d85bdce610cdcfb07a397c418122f0f58029f0eb6d5e37b209df73176ffc",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-36049",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2020-36049",
"summary": "socket.io-parser before 3.4.1 allows attackers to cause a denial of service (memory consumption) via a large packet because a concatenation approach is used.",
"evidence": "osv:UBUNTU-CVE-2020-36049",
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],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2020-36049",
"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
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"events": [
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"purl": "pkg:deb/ubuntu/node-socket.io-parser?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
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],
"database_specific": {
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},
"ecosystem_specific": {
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"4.1.1+~3.0.0-1",
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],
"modified": "2026-10-17T12:55:53.036937361Z",
"provider": "osv",
"upstream": [
"CVE-2020-36049"
],
"references": [
"https://ubuntu.com/security/CVE-2020-36049",
"https://blog.caller.xyz/socketio-engineio-dos/",
"https://github.com/bcaller/kill-engine-io",
"https://github.com/socketio/socket.io-parser/commit/dcb942d24db97162ad16a67c2a0cf30875342d55",
"https://www.cve.org/CVERecord?id=CVE-2020-36049"
]
},
"related_cves": [
{
"value": "CVE-2020-36049",
"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 354217,
"published_at": "2021-01-08T00:15:00+00:00"
}