Executive brief
Activepieces, an open-source automation tool, contains a vulnerability in how it handles file URLs within its automation engine. An attacker with access to create or modify workflows can force the server to make unauthorized requests to internal systems or private network services. This could lead to the exposure of sensitive internal data, such as cloud metadata or internal service configurations, that are not intended to be accessible from the internet.
Technical details
A Server-Side Request Forgery (SSRF) vulnerability exists in Activepieces versions up to 0.83.0 within the 'handleUrlFile' function located in 'packages/server/engine/src/lib/variables/processors/file.ts'. The vulnerability stems from the 'Property.File' processor using a raw global 'fetch()' call on user-provided URL values without applying the engine's SSRF protection guards. A remote attacker with low privileges (authenticated workflow user) can provide a malicious URL to force the worker context to fetch data from loopback addresses, private networks, or cloud metadata endpoints. As of the advisory date, the vendor has not responded to the disclosure, and a public exploit exists.
Affected products
- activepieces activepieces up to 0.83.0
Timeline
- 2026-06-21: disclosed: Public disclosure of the vulnerability and exploit.
- 2026-06-21: advisory: CVE-2026-12813 published.