Auth bypass in Surrealdb
CVE-2026-109340
SurrealDB from 3.1.0 before 3.3.0 contains an authorization bypass vulnerability that allows authenticated users to delete protected graph edges by triggering a REFERENCE ON DELETE CASCADE. Attackers with delete permission on a referenced table can delete a record whose cascade disables permission checks for edge cleanup, erasing edges despite the edge table's PERMISSIONS FOR delete clause.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/surrealdb/surrealdb/security/advisories/GHSA-4w65-7h3j-p29h (vendor-advisory)
- www.vulncheck.com/advisories/surrealdb-3.1.0-before-3.3.0-authorization-bypass-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109340?
- CVE-2026-109340 is a medium-severity vulnerability in Surrealdb, classified under Missing Authorization. CVSS score: 5.4/10. Published 2026-10-12.
- How severe is CVE-2026-109340?
- Medium severity. CVSS v3 base score is 5.4 out of 10.