---
cve: "CVE-2026-54002"
severity: "HIGH"
cvss: 8.5
epss: "41%"
vendor: "getkirby"
kev: false
exploited: false
published: "2026-07-09 19:17:05"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-15T08:32:05+02:00"
---

# CVE-2026-54002

> 8.5 HIGH · 🧪 PoC

## Beschreibung

Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and plugins that use the writer or list fields or call Dom::sanitize(), Sane::sanitize(), Sane::Html::sanitize(), Sane::Svg::sanitize(), Sane::Xml::sanitize(), Sane::sanitizeFile(), or file sanitizeContents() with untrusted input allow malicious markup injected as children of an unknown HTML or XML tag to pass through Dom::sanitize() without being correctly sanitized, causing stored cross-site scripting. This issue is fixed in versions 4.9.4 and 5.4.4.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 274dca6df93de6eda649f27f5367ddbc8e0f1fe1 (Commit)
- 3f96d3b9ccda22f0d2f901b96376b5d08556ad75 (Commit)

## Referenzen

- <https://github.com/getkirby/kirby/security/advisories/GHSA-wr9h-4r83-f4v6>
- <https://github.com/getkirby/kirby/commit/0f0437b5128c910103cbc78fc34d94b2a3faef4c>
- <https://github.com/getkirby/kirby/commit/7ad76cf9c7387462828e6ebfc8404e31b37829e9>
- <https://github.com/getkirby/kirby/commit/9ec1873864441dbc06479ef7823da348ec7f2700>
- <https://github.com/getkirby/kirby/commit/bb2562e16c754493a403b8df84c9883108871e4c>
- <https://github.com/getkirby/kirby/releases/tag/4.9.4>
- <https://github.com/getkirby/kirby/releases/tag/5.4.4>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-54002) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_