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Langflow OSS <= 1.10.0

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critical advisory

IBM Langflow OSS Unauthenticated Remote Code Execution via Chained API Endpoints (CVE-2026-9198)

Unauthenticated attackers can achieve Remote Code Execution (RCE) on default IBM Langflow OSS deployments, versions 1.0.0 through 1.10.0, by chaining access to the `/api/v1/auto_login` endpoint, which mints SUPERUSER tokens, with the `/api/v1/validate/code` endpoint, which executes user-supplied code via `exec()`.

Langflow OSS +1 remote-code-execution api-exploitation unauthenticated-access code-injection web-vulnerability ai-llm
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