CVE-2026-23938
Server DoS via JavaScript preprocessing or script items
Description
An authenticated administrator is able to crash Zabbix server or proxy by creating specifically crafted preprocessing/script item JavaScript scripts, leading to potential denial of service.
INFO
Published Date :
Aug. 18, 2026, 12:20 p.m.
Last Modified :
Aug. 18, 2026, 12:20 p.m.
Remotely Exploit :
Yes !
Source :
Zabbix
Affected Products
The following products are affected by CVE-2026-23938
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | LOW | 72de3e22-0555-4a0d-ae81-9249e0f0a1e8 |
Solution
- Update Zabbix server and proxy to the latest version.
- Restrict script creation permissions to trusted administrators.
- Review existing preprocessing and script configurations.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-23938 vulnerability anywhere in the article.