Description
Monit before version 5.20.0 is vulnerable to a cross site request forgery attack. Successful exploitation will enable an attacker to disable/enable all monitoring for a particular host or disable/enable monitoring for a specific service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Tildeslash | monit | 5.20.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | monit | 1:5.20.0-1 | — |
| Debian 13 | monit | 1:5.20.0-1 | — |
| Debian 12 | monit | 1:5.20.0-1 | — |
| Debian 7 | monit | 1:5.4-2+deb7u1 | DLA-732-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | monit | 1:5.16-2ubuntu0.1 | — |
| Ubuntu 14.04 LTS | monit | 1:5.6-2ubuntu0.1 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | monit | 5.20.0-1.1 | openSUSE-SU-2024:10275-1 |
Advisories 2
- DLA-732-1 monit - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10275-1 monit-5.20.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026