Vulnerability · Published Jul 20, 2026 · Assigned by VulnCheck
CVE-2026-63737SurrealDB before 3.1.5 Denial of Service via deep operator chains
Medium 6.5
In plain English
A medium-severity security flaw in surrealdb from surrealdb. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.5%top 57.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-674 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
- GitHub Security Advisory (GHSA-jv2j-mqmw-xvv5) vendor-advisory
- VulnCheck Advisory: SurrealDB before 3.1.5 Denial of Service via deep operator chains third-party-advisory