---
cve: "CVE-2026-23929"
severity: "HIGH"
cvss: 8.5
epss: "30%"
vendor: "Zabbix"
kev: false
exploited: false
published: "2026-08-18 13:17:21"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T03:47:09+02:00"
---

# CVE-2026-23929

> 8.5 HIGH

## Beschreibung

Prototype pollution vulnerability in searchParamsToObject() is leading to a persistent XSS in Maps. URL parameter processing was not filtering dangerous properties like __proto__, combined with jQuery's unsafe element creation that traversed the prototype chain.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |

## Patch verfügbar (OSV)

- cee258041801bce58269e37677a1b86c9fde629c (Commit)
- d607227714fc00ec6117e663d0934cb90c0f842b (Commit)

## Referenzen

- <https://support.zabbix.com/browse/ZBX-28068>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-23929) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_