Auth bypass in Surrealdb
CVE-2026-121418
SurrealDB from 3.1.0 before 3.3.0 contains an incorrect authorization vulnerability that allows record users to infer restricted field values because the streaming planner uses indexes on fields with restrictive SELECT permissions. Attackers can issue full-text MATCHES, compound B-tree, or HNSW KNN queries against restricted fields to learn which records contain guessed values or nearest vectors.
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
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-x6mm-9295-rvph (vendor-advisory)
- www.vulncheck.com/advisories/surrealdb-3.1.0-before-3.3.0-incorrect-authorizati… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-121418?
- CVE-2026-121418 is a medium-severity vulnerability in Surrealdb, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-11-03.
- How severe is CVE-2026-121418?
- Medium severity. CVSS v3 base score is 4.3 out of 10.