CVE-2026-63742: SurrealDB before 3.1.0 Field Permission Bypass via Indexed COUNT

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% 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 3.1.0 contain a field-level SELECT permission bypass vulnerability in indexed COUNT fast paths. Attackers can execute COUNT queries on indexed fields with field-level SELECT restrictions to confirm or recover restricted field values through repeated guesses.

Affected products

surrealdb: before 3.1.0 — fixed in 3.1.0

How to fix

Upgrade to a fixed version: surrealdb 3.1.0. Check the vendor advisory for mitigations.

References

https://github.com/surrealdb/surrealdb/security/advisories/GHSA-c8jx-96c9-8xrp
https://www.vulncheck.com/advisories/surrealdb-before-field-permission-bypass-via-indexed-count

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