CVE-2026-63737

Medium

Description

SurrealDB versions before 3.1.5 contain a denial of service vulnerability where authenticated users can crash the server with queries containing long chains of operators. Attackers can submit queries with tens of thousands of chained operators that create unbounded expression trees, causing stack overflow during query processing and aborting the entire process.

SeverityMedium

CVSS6.5

Exploit probability—

ProductSurrealdb

PublishedJul 20, 2026

First seenJul 20, 2026

Weakness typeCWE-674CWE-674

How to fix

Update

surrealdb surrealdb3.1.5 or later

Vendor advisories

github.com/surrealdb/surrealdb/security/advisories/GHSA-jv2j-mqmw-xvv5

Affected products

Product	Affected versions	Fixed in
surrealdb surrealdb	3.0.0 ≤ v < 3.1.5	3.1.5

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