CVE-2026-63740: SurrealDB before 3.1.4 Array Element Permission Bypass

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-20 · updated 2026-07-22
Weakness: CWE-863

Description

SurrealDB versions before 3.1.4 fail to properly enforce SELECT permissions on array elements (field.*) for record users, leaking denied array elements instead of hiding them. Attackers with record scope access can read array elements that element-level permissions should deny by exploiting incorrect index handling during permission filtering.

Affected products

surrealdb: before 3.1.4 — fixed in 3.1.4

How to fix

Upgrade to a fixed version: surrealdb 3.1.4. Check the vendor advisory for mitigations.

References

https://github.com/surrealdb/surrealdb/security/advisories/GHSA-8rw6-p7m8-63jp
https://www.vulncheck.com/advisories/surrealdb-before-array-element-permission-bypass

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