CVE-2026-63754 Details
Description
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.
A denial-of-service vulnerability has been identified in SurrealDB versions prior to 3.1.0. This issue arises when malicious LIVE queries are executed with WHERE clauses that generate evaluation errors, causing all CREATE, UPDATE, and DELETE operations on the affected table to fail. An authenticated user with only select permission can exploit this vulnerability to disrupt write operations on a table for all users, including root. The denial-of-service condition persists until the problematic LIVE query is terminated or the user's session ends.
Users can upgrade to SurrealDB version 3.1.0 or later, where this vulnerability has been patched. For those unable to upgrade, it is recommended to remove select permissions from untrusted users on tables that need to remain writable, or to manage LIVE query registrations at the application level.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 20, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/surrealdb/surrealdb/security/advisories/GHSA-4v76-cw68-4vc9 | [email protected] | Vendor AdvisoryPatch |
| https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-live-query | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-754 | Improper Check for Unusual or Exceptional Conditions | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| surrealdb surrealdb | < 3.1.0 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | Initial Analysis | [email protected] |
| Jul 20, 2026 | CVE Modified | CISA-ADP |
| Jul 20, 2026 | New CVE Received | [email protected] |