fctr-id okta-ai-agent up to 3.0.0 Script Execution react_stream.py asyncio.create_subprocess_exec script_code code injection

Summaryinfo

A vulnerability categorized as very critical has been discovered in fctr-id okta-ai-agent up to 3.0.0. Affected by this issue is the function asyncio.create_subprocess_exec of the file src/api/routers/react_stream.py of the component Script Execution. Executing a manipulation of the argument script_code can lead to code injection. This vulnerability is registered as CVE-2026-63378. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in fctr-id okta-ai-agent up to 3.0.0 and classified as very critical. This vulnerability affects the function asyncio.create_subprocess_exec of the file src/api/routers/react_stream.py of the component Script Execution. The manipulation of the argument script_code with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

TAKO AI Agent for Okta is a local-first AI agent that helps Okta administrators query tenant data using natural language. Prior to 3.0.1-beta, any authenticated user with a valid `fctr_session` cookie can submit arbitrary Python source in the `script_code` field of `POST /api/react/execute-script`, without administrator privilege. In `src/api/routers/react_stream.py`, the source is stored with `skip_discovery=True`, bypassing AI-based content filtering, and is passed to `validate_generated_code` in `src/utils/security_config.py`. `BLOCKED_PATTERNS` recognizes direct `__import__` calls but misses the import name passed as a string, `getattr` is in `ALLOWED_BUILTINS`, and the AST checker handles `ast.Name` and `ast.Attribute` targets but fails to handle `ast.Call` targets. Dynamic `getattr` call chains through `__builtins__` therefore evade validation. The `_write_temp_script` helper writes the accepted code to disk, and `asyncio.create_subprocess_exec()` executes it as the application process user, which is root in the default container. Command output is returned as Server-Sent Events through `GET /api/react/stream-react-updates?process_id=<id>`. The resulting container compromise can disclose environment secrets including Okta API tokens and the JWT key, expose the SQLite database, and permit backend-service pivoting and persistence. This issue is fixed in version 3.0.1-beta.

The advisory is available at github.com. This vulnerability was named CVE-2026-63378 since 07/16/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/30/2026). This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

Upgrading to version 3.0.1-beta eliminates this vulnerability.

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• fctr-id

Name

• okta-ai-agent

Version

• 3.0

Website

• Product: https://github.com/fctr-id/okta-ai-agent/

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