Host code execution via pre-isolate module loading
Published Aug 11, 2026 · Updated Aug 11, 2026
Sandbox bypass in Activepieces before 0.80.0 allows remote authenticated users to execute Node.js code in the host engine process. The engine's importFresh() call invokes Node.js require() on the compiled user module before applying the V8 isolate, so top-level code runs outside the sandbox. Exploitation requires permission to create a Code step and SANDBOX_CODE_ONLY mode; successful code can read environment secrets, alter files, and access internal services.
Summary
What happened
Sandbox bypass in Activepieces before 0.80.0 allows remote authenticated users to execute Node.js code in the host engine process. The engine's importFresh() call invokes Node.js require() on the compiled user module before applying the V8 isolate, so top-level code runs outside the sandbox. Exploitation requires permission to create a Code step and SANDBOX_CODE_ONLY mode; successful code can read environment secrets, alter files, and access internal services.
The record
- CVE
- CVE-2026-73083
- Published
- Aug 11, 2026
- Updated
- Aug 11, 2026
- Vendor
- Activepieces
- Product
- Activepieces
- Classifications
- CWE-693, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 11, 2026CVE publishedPublication date reported by the CVE source.
- Aug 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=< 0.80.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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