Description
In the src/libs/zbxembed/browser.c file, the es_browser_ctor method retrieves a heap pointer from the Duktape JavaScript engine. This heap pointer is subsequently utilized by the browser_push_error method in the src/libs/zbxembed/browser_error.c file. A use-after-free bug can occur at this stage if the wd->browser heap pointer is freed by garbage collection.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Zabbix | Zabbix | — | — |
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 | 1:7.0.5+dfsg-1 | — |
| Debian 13 | zabbix | 1:7.0.5+dfsg-1 | — |
| Debian 12 | zabbix | No fix yet | — |
| Debian 11 | zabbix | 1:5.0.45+dfsg-1+deb11u1 | DLA-3984-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | zabbix | No fix yet | — |
| Ubuntu Pro 20.04 LTS | zabbix | No fix yet | — |
| Ubuntu Pro 18.04 LTS | zabbix | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | zabbix | No fix yet | — |
| Ubuntu Pro 14.04 LTS | zabbix | No fix yet | — |
Advisories 3
- DLA-3984-1 zabbix - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2024-3562 Zabbix: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 10, 2025
- NCSC-2024-0462 Kwetsbaarheden verholpen in Zabbix NCSC-NL (Netherlands) · Dec 2, 2024