{"id":"CVE-2026-22208","state":"PUBLISHED","title":"OpenS100 Portrayal Engine Unrestricted Lua Standard Library Access","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.","publishedAt":"2026-02-17T14:29:05.423Z","updatedAt":"2026-07-14T15:53:15.669Z","severity":{"score":9.4,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","source":"VulnCheck"},"assigner":"VulnCheck","products":["OpenS100 Project OpenS100"],"affected":[{"vendor":"OpenS100 Project","product":"OpenS100","packageName":"OpenS100","packageURL":"pkg:github/S-100ExpertTeam/OpenS100","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"753cf294434e8d3961f20a567c4d99151e3b530d","versionType":"git"}],"repo":"https://github.com/S-100ExpertTeam/OpenS100"}],"references":["https://www.mdpi.com/1424-8220/26/4/1246","https://github.com/S-100ExpertTeam/OpenS100/commit/753cf294434e8d3961f20a567c4d99151e3b530d","https://www.vulncheck.com/advisories/opens100-portrayal-engine-unrestricted-lua-standard-library-access"],"weaknesses":["CWE-749","CWE-829"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/22xxx/CVE-2026-22208.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-22208","state":"PUBLISHED","datePublished":"2026-02-17T14:29:05.423Z","dateUpdated":"2026-07-14T15:53:15.669Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-01-06T16:47:17.186Z"},"containers":{"cna":{"title":"OpenS100 Portrayal Engine Unrestricted Lua Standard Library Access","descriptions":[{"lang":"en","value":"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":[{"vendor":"OpenS100 Project","product":"OpenS100","packageName":"OpenS100","packageURL":"pkg:github/S-100ExpertTeam/OpenS100","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"753cf294434e8d3961f20a567c4d99151e3b530d","versionType":"git"}],"repo":"https://github.com/S-100ExpertTeam/OpenS100"}],"references":[{"url":"https://www.mdpi.com/1424-8220/26/4/1246","tags":["technical-description","exploit"]},{"url":"https://github.com/S-100ExpertTeam/OpenS100/commit/753cf294434e8d3961f20a567c4d99151e3b530d","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/opens100-portrayal-engine-unrestricted-lua-standard-library-access","tags":["third-party-advisory"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.4,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.6,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-749","description":"CWE-749 Exposed Dangerous Method or Function","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-829","description":"CWE-829 Inclusion of Functionality from Untrusted Control Sphere","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-07-14T15:53:15.669Z"},"credits":[{"lang":"en","type":"finder","value":"Hoyeon Cho, National Korea Maritime and Ocean University"}],"x_generator":{"engine":"Vulnogram 0.5.0"},"source":{"discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-17T14:43:21.468091Z","id":"CVE-2026-22208","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-02-17T14:43:43.158Z"}}]}}}