Vulnerability in Surrealdb
CVE-2026-63754
SurrealDB versions before 3.1.0 contain a denial of service vulnerability where malicious LIVE queries with WHERE clauses that evaluate to errors cause all CREATE, UPDATE, and DELETE operations on the watched table to fail. An authenticated user with only select permission can prevent write operations on a table for any user, including root, by registering a LIVE query that triggers evaluation errors until the query is killed or the session ends.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (38.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Surrealdb — versions 0, 3.1.0
Weakness classification (CWE)
References
- github.com/surrealdb/surrealdb/security/advisories/GHSA-4v76-cw68-4vc9 (vendor-advisory, Patch, Vendor Advisory)
- www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-live-query (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-63754?
- CVE-2026-63754 is a medium-severity vulnerability in Surrealdb, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 6.5/10. Published 2026-07-20.
- How severe is CVE-2026-63754?
- Medium severity. CVSS v3 base score is 6.5 out of 10.