CVE catalog
CVE-2020-6581
nagios-nrpe: CVE-2020-6581
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.61% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | nagios-nrpe | sid | 4.2.0-1 | fixed |
| Debian | nagios-nrpe | forky | 4.1.3-1 | fixed |
| Debian | nagios-nrpe | trixie | 4.1.3-1 | fixed |
| Debian | nagios-nrpe | bookworm | 4.1.0-1 | fixed |
| Alpine | nrpe | 3.13 | 4.0.0-r0 | fixed |
| Alpine | nrpe | 3.14 | 4.0.0-r0 | fixed |
| Alpine | nrpe | 3.15 | 4.0.0-r0 | fixed |
| Alpine | nrpe | 3.16 | 4.0.0-r0 | fixed |
| Alpine | nrpe | 3.18 | 4.0.0-r0 | fixed |
| Alpine | nrpe | 3.19 | 4.0.0-r0 | fixed |
| Alpine | nrpe | 3.20 | 4.0.0-r0 | fixed |
| Alpine | nrpe | 3.21 | 4.0.0-r0 | fixed |
| Alpine | nrpe | 3.22 | 4.0.0-r0 | fixed |
| Alpine | nrpe | 3.23 | 4.0.0-r0 | fixed |
| Alpine | nrpe | 3.24 | 4.0.0-r0 | fixed |
| Ubuntu | nagios-nrpe | 18.04 | 3.2.0-4ubuntu2 | vulnerable |
| Ubuntu | nagios-nrpe | 18.04 | 3.2.1-1ubuntu1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | nagios-nrpe | source | sid | 4.0.0-1 | not yet assigned | Not reported | Not reported |
| Debian | nagios-nrpe | source | forky | 4.0.0-1 | not yet assigned | Not reported | Not reported |
| Debian | nagios-nrpe | source | trixie | 4.0.0-1 | not yet assigned | Not reported | Not reported |
| Debian | nagios-nrpe | source | bookworm | 4.0.0-1 | not yet assigned | Not reported | Not reported |
| Alpine | nrpe | apk | 3.13 | 4.0.0-r0 | Not reported | ALPINE-CVE-2020-6581 | Not reported |
| Alpine | nrpe | apk | 3.14 | 4.0.0-r0 | Not reported | ALPINE-CVE-2020-6581 | Not reported |
| Alpine | nrpe | apk | 3.15 | 4.0.0-r0 | Not reported | ALPINE-CVE-2020-6581 | Not reported |
| Alpine | nrpe | apk | 3.16 | 4.0.0-r0 | Not reported | ALPINE-CVE-2020-6581 | Not reported |
| Alpine | nrpe | apk | 3.18 | 4.0.0-r0 | Not reported | ALPINE-CVE-2020-6581 | Not reported |
| Alpine | nrpe | apk | 3.19 | 4.0.0-r0 | Not reported | ALPINE-CVE-2020-6581 | Not reported |
| Alpine | nrpe | apk | 3.20 | 4.0.0-r0 | Not reported | ALPINE-CVE-2020-6581 | Not reported |
| Alpine | nrpe | apk | 3.21 | 4.0.0-r0 | Not reported | ALPINE-CVE-2020-6581 | Not reported |
| Alpine | nrpe | apk | 3.22 | 4.0.0-r0 | Not reported | ALPINE-CVE-2020-6581 | Not reported |
| Alpine | nrpe | apk | 3.23 | 4.0.0-r0 | Not reported | ALPINE-CVE-2020-6581 | Not reported |
| Alpine | nrpe | apk | 3.24 | 4.0.0-r0 | Not reported | ALPINE-CVE-2020-6581 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [nagios-nrpe-plugin]Fixed
Source package: [nagios-nrpe]
Details (2)
4.1.0-1+b1· amd64 · bookwormFixed · Fixed:
4.0.0-1dsa · nagios-nrpe · debian · bookworm; dsa · nagios-nrpe · debian · 12
4.1.0-1+b1· arm64 · bookwormFixed · Fixed:
4.0.0-1dsa · nagios-nrpe · debian · bookworm; dsa · nagios-nrpe · debian · 12
- [nagios-nrpe-server]Fixed
Source package: [nagios-nrpe]
Details (2)
4.1.0-1+b1· amd64 · bookwormFixed · Fixed:
4.0.0-1dsa · nagios-nrpe · debian · bookworm; dsa · nagios-nrpe · debian · 12
4.1.0-1+b1· arm64 · bookwormFixed · Fixed:
4.0.0-1dsa · nagios-nrpe · debian · bookworm; dsa · nagios-nrpe · debian · 12
[Debian 13 (Trixie)]
- [nagios-nrpe-plugin]Fixed
Source package: [nagios-nrpe]
Details (2)
4.1.3-1· amd64 · trixieFixed · Fixed:
4.0.0-1dsa · nagios-nrpe · debian · 13
4.1.3-1· arm64 · trixieFixed · Fixed:
4.0.0-1dsa · nagios-nrpe · debian · 13
- [nagios-nrpe-server]Fixed
Source package: [nagios-nrpe]
Details (2)
4.1.3-1· amd64 · trixieFixed · Fixed:
4.0.0-1dsa · nagios-nrpe · debian · 13
4.1.3-1· arm64 · trixieFixed · Fixed:
4.0.0-1dsa · nagios-nrpe · debian · 13
Observed: