What’s Vulnerable › Vulnerabilities

CVE-2026-109340: SurrealDB 3.1.0 before 3.3.0 Authorization Bypass via REFERENCE ON DELETE CASCADE

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-12 · updated 2026-10-13
• Weakness: CWE-862

Description

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.

Affected products

• surrealdb: from 3.1.0 before 3.3.0 — fixed in 3.3.0

How to fix

Upgrade to a fixed version: surrealdb 3.3.0. Check the vendor advisory for mitigations.

References

• https://github.com/surrealdb/surrealdb/security/advisories/GHSA-4w65-7h3j-p29h
• https://www.vulncheck.com/advisories/surrealdb-3.1.0-before-3.3.0-authorization-bypass-via-reference-on-delete-cascade

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