Unauthenticated host code execution via blocklist bypass
Published Aug 13, 2026 · Updated Aug 13, 2026
Code injection in the Airtable Agent node in Flowise before 3.1.3 allows remote attackers to execute arbitrary Python code through crafted prompts. The Airtable_Agents.run method passes LLM-generated code through a static regex blocklist whose forbidden identifiers can be reconstructed or invoked indirectly, then evaluates the result in unsandboxed Pyodide. Exploitation requires a reachable chatflow that uses the Airtable Agent node; successful code runs with the Flowise server process privileges and can access the host operating system.
Summary
What happened
Code injection in the Airtable Agent node in Flowise before 3.1.3 allows remote attackers to execute arbitrary Python code through crafted prompts. The Airtable_Agents.run method passes LLM-generated code through a static regex blocklist whose forbidden identifiers can be reconstructed or invoked indirectly, then evaluates the result in unsandboxed Pyodide. Exploitation requires a reachable chatflow that uses the Airtable Agent node; successful code runs with the Flowise server process privileges and can access the host operating system.
The record
- CVE
- CVE-2026-73485
- Published
- Aug 13, 2026
- Updated
- Aug 13, 2026
- Vendor
- FlowiseAI
- Product
- Flowise
- Classifications
- CWE-94, T1190, T1059.006
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 13, 2026CVE publishedPublication date reported by the CVE source.
- Aug 13, 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=0 <3.1.3
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
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Airtable Agent poc.py code-injection exploitfunctional · demonstrated
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Technologies
Your stack
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Your stack
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