---
cve: "CVE-2022-22759"
severity: "CRITICAL"
cvss: 9.6
epss: "74%"
vendor: "Mozilla"
kev: false
exploited: false
published: "2022-12-22 20:15:19"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T17:27:54+02:00"
---

# CVE-2022-22759

> 9.6 CRITICAL

## Beschreibung

If a document created a sandboxed iframe without allow-scripts, and subsequently appended an element to the iframe's document that e.g. had a JavaScript event handler - the event handler would have run despite the iframe's sandbox. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6.

## CVSS-Vektor

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

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

## Referenzen

- <https://www.mozilla.org/security/advisories/mfsa2022-05/>
- <https://www.mozilla.org/security/advisories/mfsa2022-04/>
- <https://www.mozilla.org/security/advisories/mfsa2022-06/>
- <https://bugzilla.mozilla.org/show_bug.cgi?id=1739957>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2022-22759) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_