CVE-2026-63734 | SurrealDB versions before 3.2.0 contain a denial of service … | CVSS 4.9 MEDIUM

Description

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.

Metadata

CVE ID: CVE-2026-63734
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-07-18 12:19 UTC
Published: 2026-07-20 12:04 UTC
Last updated: 2026-07-20 19:31 UTC
Primary CWE: CWE-20
Improper Input Validation
Vendor / Product: surrealdb / surrealdb
Sources: cve.org · NVD

Severity & Metrics

4.9 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:H/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	—	0 < 3.2.0, 3.2.0

Weakness (CWE)

CWE	Source	Description
CWE-20	cna	Improper Input Validation

CVSS scores (2)

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

References (2)

GitHub Security Advisory (GHSA-jwr6-6444-28xv) https://github.com/surrealdb/surrealdb/security/advisories/GHSA-jwr6-6444-28xv
VulnCheck Advisory: SurrealDB before 3.2.0 Denial of Service via malformed SurrealML import https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-malformed-surrealml-import