High
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
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-6581
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:14 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:CVE-2020-6581
Complete source record
{
"id": "933015aa7166922d71cf36f509dcbcab4f83d6ccd9f15884e06a837c428a3e24",
"url": "https://osv.dev/vulnerability/CVE-2020-6581",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "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:CVE-2020-6581",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2020-6581",
"aliases": [
"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": [
{
"repo": "https://github.com/nagiosenterprises/nrpe",
"type": "GIT",
"events": [
{
"introduced": "86a77fe3a9cbfae990adc578834fd537f4fa8557"
},
{
"last_affected": "86a77fe3a9cbfae990adc578834fd537f4fa8557"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:nagios:remote_plug_in_executor:3.2.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.1"
},
{
"last_affected": "3.2.1"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"3.2.1",
"nrpe-3.2.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-6581.json"
}
}
],
"modified": "2026-10-24T10:30:50.431573829Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2DNGKXVDB43E3KQRA6W5QZT3Z46XZLQM/",
"https://herolab.usd.de/security-advisories/",
"https://herolab.usd.de/security-advisories/usd-2020-0002/"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "32"
},
{
"last_affected": "32"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-6581",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 437244,
"published_at": "2020-03-16T18:15:12.867+00:00"
}