Description
An authenticated user can create a hosts group from the configuration with XSS payload, which will be available for other users. When XSS is stored by an authenticated malicious actor and other users try to search for groups during new host creation, the XSS payload will fire and the actor can steal session cookies and perform session hijacking to impersonate users or take over their accounts.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Zabbix | Frontend | 5.0.0 – 5.0.18, 5.4.0 – 5.4.8 | — |
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 | zabbix | 1:6.0.7+dfsg-2 | — |
| Debian 13 | zabbix | 1:6.0.7+dfsg-2 | — |
| Debian 12 | zabbix | 1:6.0.7+dfsg-2 | — |
| Debian 11 | zabbix | 1:5.0.44+dfsg-1+deb11u1 | DLA-3909-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | zabbix | No fix yet | — |
Advisories 1
- DLA-3909-1 zabbix - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://support.zabbix.com/browse/ZBX-20388
- FEDORA-2022-dfe346f53f vendor-advisory
- FEDORA-2022-1a667b0f90 vendor-advisory