Description
In Xymon through 4.3.28, an XSS vulnerability exists in the csvinfo CGI script due to insufficient filtering of the db parameter.
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 | xymon | 4.3.29-1 | — |
| Debian 13 | xymon | 4.3.29-1 | — |
| Debian 12 | xymon | 4.3.29-1 | — |
| Debian 8 | xymon | 4.3.17-6+deb8u2 | DLA-1898-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | xymon | 4.3.29-1 | — |
| Ubuntu 18.04 LTS | xymon | No fix yet | — |
| Ubuntu 16.04 LTS | xymon | No fix yet | — |
Advisories 1
- DLA-1898-1 xymon - security update Debian Security (DSA / DLA) · Mar 9, 2026