CVE-2026-63754

Medium

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.

SeverityMedium

CVSS6.5

Exploit probability—

ProductSurrealdb

PublishedJul 20, 2026

First seenJul 20, 2026

Weakness typeCWE-754CWE-754

How to fix

Update

surrealdb surrealdb3.1.0 or later

Vendor advisories

github.com/surrealdb/surrealdb/security/advisories/GHSA-4v76-cw68-4vc9

Affected products

Product	Affected versions	Fixed in
surrealdb surrealdb	v < 3.1.0	3.1.0

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