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CVE-2026-22208

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 Open
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e1a621b3f0b1763217d76cc9c64b3cabdd1b563bab4462fdb4d8efdf99abefc8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"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…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:621b5b6df962fc541477f43620b71349e4f72c6021a370907f25deabfef38079 · sha256:b4fc1ad78a4e7bca… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"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"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:621b5b6df962fc541477f43620b71349e4f72c6021a370907f25deabfef38079 · sha256:b4fc1ad78a4e7bca… · /containers/cna/metrics/1/cvssV3_1
cwe · 2 assertions

{"cweId":"CWE-749","description":"CWE-749 Exposed Dangerous Method or Function","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:621b5b6df962fc541477f43620b71349e4f72c6021a370907f25deabfef38079 · sha256:b4fc1ad78a4e7bca… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-829","description":"CWE-829 Inclusion of Functionality from Untrusted Control Sphere","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:621b5b6df962fc541477f43620b71349e4f72c6021a370907f25deabfef38079 · sha256:b4fc1ad78a4e7bca… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","packageName":"OpenS100","packageURL":"pkg:github/S-100ExpertTeam/OpenS100","product":"OpenS100","repo":"https://github.com/S-100ExpertTeam/OpenS100","vendor":"OpenS100 Project","versions":[{"lessThan":"753cf294434e8d3961f20a567c4d99151e3b530d","status":"affected","version":"0","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:621b5b6df962fc541477f43620b71349e4f72c6021a370907f25deabfef38079 · sha256:b4fc1ad78a4e7bca… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"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…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:621b5b6df962fc541477f43620b71349e4f72c6021a370907f25deabfef38079 · sha256:b4fc1ad78a4e7bca… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"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"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:621b5b6df962fc541477f43620b71349e4f72c6021a370907f25deabfef38079 · sha256:b4fc1ad78a4e7bca… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-749","description":"CWE-749 Exposed Dangerous Method or Function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:621b5b6df962fc541477f43620b71349e4f72c6021a370907f25deabfef38079 · sha256:b4fc1ad78a4e7bca… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-829","description":"CWE-829 Inclusion of Functionality from Untrusted Control Sphere","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:621b5b6df962fc541477f43620b71349e4f72c6021a370907f25deabfef38079 · sha256:b4fc1ad78a4e7bca… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"tags":["patch"],"url":"https://github.com/S-100ExpertTeam/OpenS100/commit/753cf294434e8d3961f20a567c4d99151e3b530d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:621b5b6df962fc541477f43620b71349e4f72c6021a370907f25deabfef38079 · sha256:b4fc1ad78a4e7bca… · /containers/cna/references/1
{"tags":["technical-description","exploit"],"url":"https://www.mdpi.com/1424-8220/26/4/1246"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:621b5b6df962fc541477f43620b71349e4f72c6021a370907f25deabfef38079 · sha256:b4fc1ad78a4e7bca… · /containers/cna/references/0
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/opens100-portrayal-engine-unrestricted-lua-standard-library-access"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:621b5b6df962fc541477f43620b71349e4f72c6021a370907f25deabfef38079 · sha256:b4fc1ad78a4e7bca… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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