---
cve: "CVE-2026-73426"
severity: "MEDIUM"
cvss: 4.6
epss: "0.2%"
vendor: "basecamp"
kev: false
exploited: false
published: "2026-08-18 15:17:08"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T03:51:55+02:00"
---

# CVE-2026-73426

> 4.6 MEDIUM · 🧪 PoC

## Beschreibung

Trix is a what-you-see-is-what-you-get rich text editor for everyday writing. Prior to 2.1.17, Trix is vulnerable to cross-site scripting when a data-trix-serialized-attributes attribute bypasses the DOMPurify sanitizer. An attacker can craft HTML containing a data-trix-serialized-attributes attribute with a malicious payload that, when rendered, executes arbitrary JavaScript in the user's session and may perform unauthorized actions or disclose sensitive information. This issue is fixed in version 2.1.17.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 3229c29c771ded4d247ed79b2ccd2cd05c4e74b4 (Commit)
- 53197ab5a142e6b0b76127cb790726b274eaf1bc (Commit)

## Referenzen

- <https://github.com/basecamp/trix/security/advisories/GHSA-qmpg-8xg6-ph5q>
- <https://github.com/basecamp/trix/pull/1282>
- <https://github.com/basecamp/trix/commit/3229c29c771ded4d247ed79b2ccd2cd05c4e74b4>
- <https://github.com/basecamp/trix/commit/53197ab5a142e6b0b76127cb790726b274eaf1bc>
- <https://github.com/basecamp/trix/releases/tag/v2.1.17>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-73426) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_