HighFix available
libuv, nodejs — security advisory
The implementation of realpath in libuv < 10.22.1, < 12.18.4, and < 14.9.0 used within Node.js incorrectly determined the buffer size which can result in a buffer overflow if the resolved path is longer than 256 bytes.
- Products
- libuv, nodejs
- Affected versions
- Not specified
- Fixed versions
- 1.38.1-r0, 1.39.0-r0, 12.18.4-r0, 12.20.1-r0
- CVEs
- CVE-2020-8252
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 12:12 UTC · Revision 1
Source evidence
The implementation of realpath in libuv < 10.22.1, < 12.18.4, and < 14.9.0 used within Node.js incorrectly determined the buffer size which can result in a buffer overflow if the resolved path is longer than 256 bytes.
osv:ALPINE-CVE-2020-8252
libuv
Fixed versions: 1.38.1-r0
libuv
Fixed versions: 1.39.0-r0
libuv
Fixed versions: 1.39.0-r0
libuv
Fixed versions: 1.39.0-r0
libuv
Fixed versions: 1.39.0-r0
libuv
Fixed versions: 1.39.0-r0
libuv
Fixed versions: 1.39.0-r0
libuv
Fixed versions: 1.39.0-r0
libuv
Fixed versions: 1.39.0-r0
libuv
Fixed versions: 1.39.0-r0
libuv
Fixed versions: 1.39.0-r0
libuv
Fixed versions: 1.39.0-r0
libuv
Fixed versions: 1.39.0-r0
nodejs
Fixed versions: 12.20.1-r0
nodejs
Fixed versions: 12.18.4-r0
nodejs
Fixed versions: 12.18.4-r0
nodejs
Fixed versions: 12.18.4-r0
nodejs
Fixed versions: 12.18.4-r0
nodejs
Fixed versions: 12.18.4-r0
nodejs
Fixed versions: 12.18.4-r0
nodejs
Fixed versions: 12.18.4-r0
nodejs
Fixed versions: 12.18.4-r0
nodejs
Fixed versions: 12.18.4-r0
nodejs
Fixed versions: 12.18.4-r0
nodejs
Fixed versions: 12.18.4-r0
nodejs
Fixed versions: 12.18.4-r0
nodejs
Fixed versions: 12.18.4-r0
Complete source record
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],
"modified": "2026-10-26T11:17:55.183645366Z",
"provider": "osv",
"upstream": [
"CVE-2020-8252"
],
"references": [
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]
},
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{
"value": "CVE-2020-8252",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 450682,
"published_at": "2020-09-18T21:15:13.497+00:00"
}