{"id":"CVE-2026-109334","title":"SurrealDB before 3.3.0 does not check the caller-selected namespace or database against the level at which a namespace- or database-level system user authenticated, allowing cross-tenant access","summary":"SurrealDB before 3.3.0 does not check the caller-selected namespace or database against the level at which a namespace- or database-level system user authenticated, allowing cross-tenant access. An authenticated attacker can set the Surr…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-639"],"published":"2026-10-12","updated":"2026-10-12","sourceUpdated":"2026-10-12T17:17:29.483","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-109334","references":[{"url":"https://github.com/surrealdb/surrealdb/security/advisories/GHSA-w5v9-jc5f-5rmc","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/surrealdb-before-3.3.0-cross-tenant-access-via-surreal-ns-surreal-db-headers-and-rpc-use","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"ingestedAt":"2026-10-12T18:00:08.205Z","slug":"CVE-2026-109334","body":"## Overview\n\nSurrealDB before 3.3.0 does not check the caller-selected namespace or database against the level at which a namespace- or database-level system user authenticated, allowing cross-tenant access. An authenticated attacker can set the Surreal-NS/Surreal-DB headers on /sql or call the RPC use method to read, create, modify, and delete rows and read DEFINE PARAM values in another tenant where table PERMISSIONS allow it.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}