CVE-2026-23938 (GCVE-0-2026-23938)

Vulnerability from cvelistv5 – Published: 2026-08-18 12:20 – Updated: 2026-08-18 13:34
VLAI
Title
Server DoS via JavaScript preprocessing or script items
Summary
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.
Severity
2.1 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 12:50 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Zabbix Zabbix Affected: 6.0.0 , ≤ 6.0.46 (git)
Affected: 7.0.0 , ≤ 7.0.26 (git)
Affected: 7.4.0 , ≤ 7.4.10 (git)
guessed Create a notification for this product.
Credits
Zabbix wants to thank mjlx for submitting this report on the HackerOne bug bounty platform.
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.