Possible Langflow Unauthenticated Code Execution via validate code Endpoint (via webserver)
- Category
- webserver
- Author
- HuntRule
- Published
- 2026-09-27
- Updated
- 2026-09-27
ATT&CK techniques
Initial Access → ExecutionRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects HTTP POST requests to the Langflow validate code API that contain Python execution markers such as exec or import decorators. This corresponds to CVE-2025-3248 which allows unauthenticated remote code execution. Routine validation traffic does not embed decorator based exec payloads.
Reporting behind it
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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