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CVE

CWE

Training

CVE-2026-22208

Published: Feb 17, 2026

Modified: May 26, 2026

PUBLISHED

CVSS v3.1

9.6

CRITICAL

Description

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.

Vendor	Product	Versions
OpenS100 Project	OpenS100	affected `0 - < 753cf294434e8d3961f20a567c4d99151e3b530d`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

References

https://www.mdpi.com/1424-8220/26/4/1246

technical-description

exploit

https://github.com/S-100ExpertTeam/OpenS100/commit/753cf294434e8d3961f20a567c4d99151e3b530d

patch

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

third-party-advisory

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