HighFix available
nrpe — security advisory
Nagios NRPE 3.2.1 has Insufficient Filtering because, for example, nasty_metachars interprets \n as the character \ and the character n (not as the \n newline sequence). This can cause command injection.
- Products
- nrpe
- Affected versions
- Not specified
- Fixed versions
- 4.0.0-r0
- CVEs
- CVE-2020-6581
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 12:12 UTC · Revision 1
Source evidence
Nagios NRPE 3.2.1 has Insufficient Filtering because, for example, nasty_metachars interprets \n as the character \ and the character n (not as the \n newline sequence). This can cause command injection.
osv:ALPINE-CVE-2020-6581
nrpe
Fixed versions: 4.0.0-r0
nrpe
Fixed versions: 4.0.0-r0
nrpe
Fixed versions: 4.0.0-r0
nrpe
Fixed versions: 4.0.0-r0
nrpe
Fixed versions: 4.0.0-r0
nrpe
Fixed versions: 4.0.0-r0
nrpe
Fixed versions: 4.0.0-r0
nrpe
Fixed versions: 4.0.0-r0
nrpe
Fixed versions: 4.0.0-r0
nrpe
Fixed versions: 4.0.0-r0
nrpe
Fixed versions: 4.0.0-r0
Complete source record
{
"id": "e1f89b06ba45d10d93e3d776531e79c2cec25cdf5c97b7c3dfc42f3db62d72ae",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-6581",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2020-6581",
"summary": "Nagios NRPE 3.2.1 has Insufficient Filtering because, for example, nasty_metachars interprets \\n as the character \\ and the character n (not as the \\n newline sequence). This can cause command injection.",
"evidence": "osv:ALPINE-CVE-2020-6581",
"products": [
{
"name": {
"value": "nrpe",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.0.0-r0",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "nrpe",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.0.0-r0",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "nrpe",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.0.0-r0",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "nrpe",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.0.0-r0",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "nrpe",
"evidence": "/affected/4/package/name"
},
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"fixed_versions": [
{
"value": "4.0.0-r0",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.0.0-r0",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/6/package/name"
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{
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"evidence": "/affected/6/ranges"
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],
"affected_versions": []
},
{
"name": {
"value": "nrpe",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.0.0-r0",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "nrpe",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.0.0-r0",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "nrpe",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.0.0-r0",
"evidence": "/affected/9/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "nrpe",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.0.0-r0",
"evidence": "/affected/10/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "ALPINE-CVE-2020-6581",
"aliases": [
"ALPINE-CVE-2020-6581"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.0.0-r0"
}
]
}
],
"package": {
"name": "nrpe",
"purl": "pkg:apk/alpine/nrpe?arch=source",
"ecosystem": "Alpine:v3.13"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-6581.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.0.0-r0"
}
]
}
],
"package": {
"name": "nrpe",
"purl": "pkg:apk/alpine/nrpe?arch=source",
"ecosystem": "Alpine:v3.14"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-6581.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.0.0-r0"
}
]
}
],
"package": {
"name": "nrpe",
"purl": "pkg:apk/alpine/nrpe?arch=source",
"ecosystem": "Alpine:v3.15"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-6581.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.0.0-r0"
}
]
}
],
"package": {
"name": "nrpe",
"purl": "pkg:apk/alpine/nrpe?arch=source",
"ecosystem": "Alpine:v3.16"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-6581.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.0.0-r0"
}
]
}
],
"package": {
"name": "nrpe",
"purl": "pkg:apk/alpine/nrpe?arch=source",
"ecosystem": "Alpine:v3.18"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-6581.json"
},
"ecosystem_specific": {}
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{
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],
"package": {
"name": "nrpe",
"purl": "pkg:apk/alpine/nrpe?arch=source",
"ecosystem": "Alpine:v3.19"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-6581.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.0.0-r0"
}
]
}
],
"package": {
"name": "nrpe",
"purl": "pkg:apk/alpine/nrpe?arch=source",
"ecosystem": "Alpine:v3.20"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-6581.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.0.0-r0"
}
]
}
],
"package": {
"name": "nrpe",
"purl": "pkg:apk/alpine/nrpe?arch=source",
"ecosystem": "Alpine:v3.21"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-6581.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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},
{
"fixed": "4.0.0-r0"
}
]
}
],
"package": {
"name": "nrpe",
"purl": "pkg:apk/alpine/nrpe?arch=source",
"ecosystem": "Alpine:v3.22"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-6581.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.0.0-r0"
}
]
}
],
"package": {
"name": "nrpe",
"purl": "pkg:apk/alpine/nrpe?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-6581.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.0.0-r0"
}
]
}
],
"package": {
"name": "nrpe",
"purl": "pkg:apk/alpine/nrpe?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-6581.json"
},
"ecosystem_specific": {}
}
],
"modified": "2026-10-26T11:17:55.179087594Z",
"provider": "osv",
"upstream": [
"CVE-2020-6581"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2020-6581"
]
},
"related_cves": [
{
"value": "CVE-2020-6581",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 450662,
"published_at": "2020-03-16T18:15:12.867+00:00"
}