CVE-2026-71268

Summary

OpenPLC Runtime v3's compile_program function (webserver/openplc.py) parses directives from uploaded Structured Text (.st) program files and writes the referenced content to with no validation that file_path stays within the ./core directory. A path-validation function, validate_file_path, exists elsewhere in the codebase (webserver/credentials.py) but is never invoked from compile_program, leaving the sink unprotected.

Affected Software

Weaknesses

• CWE-22: CWE-22

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://github.com/thiagoralves/OpenPLC_v3
• https://github.com/thiagoralves/OpenPLC_v3/blob/master/webserver/openplc.py

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