Horizon Alert
Summary of the vulnerability and why it matters
A security vulnerability has been identified in Activepieces, an open-source AI workflow automation platform, which could allow unauthorized access to sensitive data and the execution of malicious code across different tenants. This issue stems from an improperly handled path segment within the platform's code execution environment, potentially impacting multiple users sharing the same worker instance. The primary concern is to determine if your environment utilizes this platform and is therefore exposed.
- Authenticated users can access other tenants' data.
- Critical for understanding potential tenant data exposure.
- Confirm relevance and assess potential exposure.
Attack Path
How an attacker could exploit the issue
An attacker with authenticated access to the Activepieces platform could exploit a vulnerability in the code execution sandbox. By manipulating a path segment within this sandbox, an attacker could gain unauthorized read-write access to cached flow and code files belonging to other tenants. This access could allow them to expose sensitive embedded data and inject malicious code that would execute the next time a victim tenant's flow runs.
- Authenticated flow author needed.
- Unsanitized path segment in sandbox.
- Read/write other tenants' files.
Live Threat
Current exploitation, exposure, and threat context
An authenticated flow author could access and modify the cached files of other tenants on the same worker. This could lead to the exposure of embedded data within those files and the execution of malicious code on a victim tenant's next flow run when supported by the advisory.
- Other tenants' cached flow and code files.
- Unsanitized path segment in code piece sandbox.
- Sensitive data exposure and modified code execution.
Operational Fix
Recommended remediation, mitigation, and detection steps
Real-world responsibility for this vulnerability likely falls to the platform or infrastructure teams managing the Activepieces deployment. As an open-source AI workflow automation platform, Activepieces' ownership would be tied to how it's integrated and operated within an organization's environment. The first practical step is to identify all instances of Activepieces, confirm their exposure and criticality, and then engage the relevant application or platform owners to plan remediation based on the identified risk.
- Platform/infrastructure teams own the issue.
- Verify Activepieces instances and their reachability.
- Plan remediation based on tenant exposure risk.
