CVE-2026-22208

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.

CVSS v3 9.6 CRITICAL

9.6^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.8 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/S-100ExpertTeam/OpenS100/commit/753cf294434e8d3961f20a567c4d99151e3b530d
https://www.mdpi.com/1424-8220/26/4/1246
https://www.vulncheck.com/advisories/opens100-portrayal-engine-unrestricted-lua-standard-library-access

Configurations

No configuration.

History

No history.

Information

Published : 2026-02-17 15:16

Updated : 2026-02-18 17:52

NVD link : CVE-2026-22208

Mitre link : CVE-2026-22208

CVE.ORG link : CVE-2026-22208

JSON object : View

Products Affected

No product.

CWE

CWE-749

Exposed Dangerous Method or Function

CWE-829

Inclusion of Functionality from Untrusted Control Sphere

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