---
cve: "CVE-2026-73084"
severity: "MEDIUM"
cvss: 6.1
epss: "23%"
vendor: "activepieces"
kev: false
exploited: false
published: "2026-08-11 17:19:16"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T02:07:52+02:00"
---

# CVE-2026-73084

> 6.1 MEDIUM · 🧪 PoC

## Beschreibung

Activepieces is an open source AI workflow automation platform. Prior to 0.83.0, the /api/redirect OAuth callback endpoint embeds the user-supplied code query parameter directly into an inline script block without proper escaping. A crafted request to /api/redirect with a malicious code value can break out of the script context and execute arbitrary JavaScript in the Activepieces origin when a logged-in user opens it. An unauthenticated attacker can access the victim's session tokens or make authenticated API calls on the victim's behalf. This issue is fixed in version 0.83.0.

## CVSS-Vektor

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

| 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 | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 8be4c8d5e6a79ccbaa74815027432a3c8c311385 (Commit)
- 4b3c13f3ae3f0d4a92ed790f47a03ffbfb9d92cc (Commit)

## Referenzen

- <https://github.com/activepieces/activepieces/security/advisories/GHSA-hc39-cm5m-q8g7>
- <https://github.com/activepieces/activepieces/commit/8be4c8d5e6a79ccbaa74815027432a3c8c311385>
- <https://github.com/activepieces/activepieces/releases/tag/0.83.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-73084) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_