Auth bypass in Surrealdb
CVE-2026-63309
SurrealDB before 3.1.5 fail to apply field-level SELECT permissions to ORDER BY clauses, allowing authenticated users to leak the relative ordering of restricted field values. Attackers can issue ORDER BY queries on indexed restricted fields to recover the hidden values' sort order across records, even though the field itself returns null as intended.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (25.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Surrealdb — versions 3.0.0, 3.1.5
Weakness classification (CWE)
References
- github.com/surrealdb/surrealdb/security/advisories/GHSA-h4h3-3rfj-x6fq (vendor-advisory)
- github.com/surrealdb/surrealdb/releases/tag/v3.1.5 (release-notes)
- www.vulncheck.com/advisories/surrealdb-information-disclosure-via-order-by (third-party-advisory)
Frequently asked questions
- What is CVE-2026-63309?
- CVE-2026-63309 is a medium-severity vulnerability in Surrealdb, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-07-17.
- How severe is CVE-2026-63309?
- Medium severity. CVSS v3 base score is 4.3 out of 10.