---
cve: "CVE-2026-72663"
severity: "MEDIUM"
cvss: 6.5
epss: "29%"
vendor: "Elastic"
kev: false
exploited: false
published: "2026-08-13 19:13:03"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-05T19:03:05+02:00"
---

# CVE-2026-72663

> 6.5 MEDIUM

## Beschreibung

Inefficient Algorithmic Complexity (CWE-407) in Kibana can lead to denial of service via Input Data Manipulation (CAPEC-153). A specially crafted, deeply nested expression submitted to a Kibana TSVB visualization is evaluated with a worst-case cost that grows disproportionately with the size of the input. Because the evaluation runs synchronously, a single request consumes the Kibana request-processing thread indefinitely, and Kibana stops responding to all further requests until the service is restarted.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Schwachstellen-Klasse

- **CWE-407** — Inefficient Algorithmic Complexity
  An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.

## Patch verfügbar (OSV)

- 91f5381ece296ddc32b554f997269478b9224af8 (Commit)
- adc1f04ffdd393d1977990338d5512c5eaf1ce94 (Commit)

## Referenzen

- <https://discuss.elastic.co/t/kibana-8-19-20-and-9-4-5-security-update-esa-2026-104/389520>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-72663) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_