CVE-2026-22208

CRITICAL

9.6

Description

OpenS100 (the reference implementation S-100 viewer) prior to commit 753cf29 contain 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.

CVE Details

CVSS v3.1 Score9.6

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published2/17/2026

Last Modified2/18/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-749CWE-829

References

https://github.com/S-100ExpertTeam/OpenS100/commit/753cf294434e8d3961f20a567c4d99151e3b530d(disclosure@vulncheck.com)

https://www.mdpi.com/1424-8220/26/4/1246(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/opens100-portrayal-engine-unrestricted-lua-standard-library-access(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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