Thiagoralves OpenPLC v3 vulnerabilities

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Published CVEs affecting Thiagoralves OpenPLC v3: 1 record(s), with affected versions and fixes.

CVE-2026-71268 Critical · 9.9 CWE-22 Aug 5, 2026

OpenPLC Runtime v3 Path Traversal in Structured Text FILE Directive Leading to Arbitrary File Write

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.