{"id":"CVE-2026-93594","state":"PUBLISHED","title":"ArcadeDB before 26.9.1 ACL Bypass via Index and TimeSeries","description":"ArcadeDB (Maven artifact com.arcadedb:arcadedb-engine) through 26.8.1 enforces its per-type/per-record access-control rules only in LocalBucket, keyed on file id. Query-execution paths that reach record data through LSM index files or the TimeSeries engine never invoke that permission check, so an authenticated user who is denied readRecord/deleteRecord on a type can still, with a single ordinary SQL statement, read the type's indexed key values and record IDs (e.g. SELECT key, rid FROM INDEX:Type[field]), read MAX/MIN values via the index shortcut, read and count TimeSeries samples, learn the type's record count, and delete index entries (DELETE FROM INDEX:Type[field]), which desynchronizes the index from the data and can defeat unique constraints. Index and type names needed for exploitation are discoverable because SELECT FROM schema:indexes is unfiltered. The issue affects both embedded and server deployments and all transports (HTTP, Bolt, Postgres, Gremlin) once a principal is bound. Fixed in 26.9.1.","publishedAt":"2026-09-18T13:20:06.730Z","updatedAt":"2026-09-18T14:32:33.083Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["ArcadeData arcadedb"],"affected":[{"vendor":"ArcadeData","product":"arcadedb","packageURL":"pkg:maven/com.arcadedb/arcadedb-engine","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"26.9.1","versionType":"semver"},{"version":"26.9.1","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-2c8m-q484-jv7m","https://www.vulncheck.com/advisories/arcadedb-before-26.9.1-acl-bypass-via-index-and-timeseries"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93594.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93594","state":"PUBLISHED","datePublished":"2026-09-18T13:20:06.730Z","dateUpdated":"2026-09-18T14:32:33.083Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-09-18T10:59:45.138Z"},"containers":{"cna":{"title":"ArcadeDB before 26.9.1 ACL Bypass via Index and TimeSeries","descriptions":[{"lang":"en","value":"ArcadeDB (Maven artifact com.arcadedb:arcadedb-engine) through 26.8.1 enforces its per-type/per-record access-control rules only in LocalBucket, keyed on file id. Query-execution paths that reach record data through LSM index files or the TimeSeries engine never invoke that permission check, so an authenticated user who is denied readRecord/deleteRecord on a type can still, with a single ordinary SQL statement, read the type's indexed key values and record IDs (e.g. SELECT key, rid FROM INDEX:Type[field]), read MAX/MIN values via the index shortcut, read and count TimeSeries samples, learn the type's record count, and delete index entries (DELETE FROM INDEX:Type[field]), which desynchronizes the index from the data and can defeat unique constraints. Index and type names needed for exploitation are discoverable because SELECT FROM schema:indexes is unfiltered. The issue affects both embedded and server deployments and all transports (HTTP, Bolt, Postgres, Gremlin) once a principal is bound. Fixed in 26.9.1."}],"affected":[{"vendor":"ArcadeData","product":"arcadedb","packageURL":"pkg:maven/com.arcadedb/arcadedb-engine","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"26.9.1","versionType":"semver"},{"version":"26.9.1","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-2c8m-q484-jv7m","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-2c8m-q484-jv7m)"},{"url":"https://www.vulncheck.com/advisories/arcadedb-before-26.9.1-acl-bypass-via-index-and-timeseries","name":"VulnCheck Advisory: ArcadeDB before 26.9.1 ACL Bypass via Index and TimeSeries","tags":["third-party-advisory"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.1,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS"},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-09-18T13:20:06.730Z"},"datePublic":"2026-09-03T00:00:00.000Z","credits":[{"lang":"en","value":"ruispereira","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-2c8m-q484-jv7m","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-18T14:29:20.136917Z","id":"CVE-2026-93594","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":"2026-09-18T14:32:33.083Z"}}]}}}