CVE-2026-22208

Summary

OpenS100 (the reference implementation S-100 viewer) prior to commit 753cf29 contains a remote code execution vulnerability via an unrestricted Lua interpreter. The Portrayal Engine initializes Lua using luaL_openlibs() without sandboxing or capability restrictions, exposing standard libraries such as 'os' and 'io' to untrusted portrayal catalogues. An attacker can provide a malicious S-100 portrayal catalogue containing Lua scripts that execute arbitrary commands with the privileges of the OpenS100 process when a user imports the catalogue and loads a chart.

Affected Software

VendorProductVersion RangeStatus
OpenS100 ProjectOpenS1000 < 753cf294434e8d3961f20a567c4d99151e3b530daffected

Weaknesses

  • CWE-749: CWE-749 Exposed Dangerous Method or Function
  • CWE-829: CWE-829 Inclusion of Functionality from Untrusted Control Sphere

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: total

References