CVE-2026-49989: CrateDB's Blob HTTP handler bypasses authorization

July 1, 2026

CrateDB has two ways to access blob storage: SQL (SELECT ... FROM blob.<table> and friends) and the blob HTTP API (GET|PUT|DELETE /_blobs/{table}/{digest}). The SQL path goes through AccessControl, which is what enforces privilege grants; that’s why SELECT digest FROM blob.secret_blobs fails for a user who has no grants on the table.

The HTTP path authenticates the request but never asks AccessControl whether the authenticated user is allowed to touch the table. So a user with no grants gets MissingPrivilegeException from SQL and 200 OK plus the blob bytes from GET /_blobs/secret_blobs/<digest>.

References

github.com/advisories/GHSA-2xv8-gjwh-fv8p
github.com/crate/crate/security/advisories/GHSA-2xv8-gjwh-fv8p
nvd.nist.gov/vuln/detail/CVE-2026-49989

Code Behaviors & Features

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