CVE-2026-63737 | SurrealDB versions before 3.1.5 contain a denial of service … | CVSS 6.5 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.

Metadata

CVE ID: CVE-2026-63737
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-07-18 12:19 UTC
Published: 2026-07-20 12:04 UTC
Last updated: 2026-07-20 13:51 UTC
Primary CWE: CWE-674
Uncontrolled Recursion
Vendor / Product: surrealdb / surrealdb
Sources: cve.org · NVD

Severity & Metrics

6.5 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
surrealdb	surrealdb	—	3.0.0 < 3.1.5, 3.1.5

Weakness (CWE)

CWE	Source	Description
CWE-674	cna	Uncontrolled Recursion

CVSS scores (2)

Score	Severity	Version	Source	Vector
7.1	HIGH	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.5	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References (2)

GitHub Security Advisory (GHSA-jv2j-mqmw-xvv5) https://github.com/surrealdb/surrealdb/security/advisories/GHSA-jv2j-mqmw-xvv5
VulnCheck Advisory: SurrealDB before 3.1.5 Denial of Service via deep operator chains https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-deep-operator-chains