CVE-2026-63734

SurrealDB versions before 3.2.0 contain a denial of service vulnerability in the SurrealML header parser that allows authenticated Owner-role users to crash the server by uploading a malformed .surml file to the /ml/import endpoint. Attackers can supply non-numeric input-dimensions or other malformed header fields that trigger unchecked unwrap calls, causing a panic that aborts the entire server process and denies service to all databases.

CVSS v3 4.9 MEDIUM

4.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/surrealdb/surrealdb/security/advisories/GHSA-jwr6-6444-28xv	Vendor Advisory Mitigation
https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-malformed-surrealml-import	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:*

History

24 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Las versiones de SurrealDB anteriores a la 3.2.0 contienen una vulnerabilidad de denegación de servicio en el analizador de encabezados de SurrealML que permite a usuarios autenticados con rol de Propietario colapsar el servidor al subir un archivo .surml malformado al endpoint /ml/import. Los atacantes pueden proporcionar dimensiones de entrada no numéricas u otros campos de encabezado malformados que desencadenan llamadas ’unwrap’ no verificadas, causando un pánico que aborta todo el proceso del servidor y deniega el servicio a todas las bases de datos.

Information

Published : 2026-07-20 12:19

Updated : 2026-10-24 20:10

NVD link : CVE-2026-63734

Mitre link : CVE-2026-63734

CVE.ORG link : CVE-2026-63734

JSON object : View

Products Affected

surrealdb

surrealdb

CWE

CWE-20

Improper Input Validation

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