CVE-2026-75850

Summary

ArcadeDB before 26.8.1 fails to bind the authenticated principal (setCurrentUser) on its batch and time-series HTTP handlers. Because no principal is bound on the worker thread, the engine's fine-grained per-type ACL layer (LocalBucket.checkPermissionsOnFile) does not execute for these handlers. In deployments that use per-type or per-group ACLs, a user with database access but only limited per-type permissions can read from and write to types they are not authorized to access by submitting requests to the batch/time-series endpoints. Deployments that rely solely on database-level access control are not affected.

Affected Software

Weaknesses

• CWE-862: Missing Authorization

References

• https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-c23x-pqcj-7hfm
• https://www.vulncheck.com/advisories/arcadedb-before-per-type-acl-bypass-via-batch-handlers

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