Server process execution via pyodide sandbox escape
Published Jan 22, 2026 · Updated Jan 22, 2026
Sandbox escape in Grist Labs grist-core before 1.7.9 allows remote attackers to execute arbitrary processes through a malicious document. The pyodide sandbox runs Python formulas under Node, which provides no effective isolation barrier and lets document code spawn host processes. Exploitation requires GRIST_SANDBOX_FLAVOR=pyodide and a malicious document to be opened; resulting processes execute on the Grist server.
Summary
What happened
Sandbox escape in Grist Labs grist-core before 1.7.9 allows remote attackers to execute arbitrary processes through a malicious document. The pyodide sandbox runs Python formulas under Node, which provides no effective isolation barrier and lets document code spawn host processes. Exploitation requires GRIST_SANDBOX_FLAVOR=pyodide and a malicious document to be opened; resulting processes execute on the Grist server.
The record
- CVE
- CVE-2026-24002
- Published
- Jan 22, 2026
- Updated
- Jan 22, 2026
- Vendor
- Grist Labs
- Product
- grist-core
- Classifications
- CWE-74, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 22, 2026CVE publishedPublication date reported by the CVE source.
- Jan 22, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 1.7.9
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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