Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Linuxfabrik Monitoring Plugins' linuxfabrik-lib package, versions before 5.0.0, is vulnerable to command injection through user-supplied plugin arguments. The restic-check plugin, for example, places its --repo argument inside a command passed to shell_exec, where the | character splits the command and runs embedded commands. An attacker who controls the nagios user, and who can run a plugin listed in sudoers, can gain root privileges. Upgrade linuxfabrik-lib to version 5.0.0 or later, which runs commands as argument lists without a shell.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 7.8 | High | 3.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0021, the 11th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:43 UTC First seen by agentprime
- 31 Oct 2026, 14:43 UTC Confirmed by OSV