Vulnerability · Published Jul 20, 2026 · Assigned by VulnCheck

CVE-2026-63734SurrealDB before 3.2.0 Denial of Service via malformed SurrealML import

Medium 4.9

In plain English

A medium-severity improper input validation 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 41% of all known vulnerabilities).

Severity (CVSS 3.1)4.9Medium

Exploit odds (30 days)0.5%top 59.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
surrealdb	surrealdb	0 – before 3.2.0

Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

References

GitHub Security Advisory (GHSA-jwr6-6444-28xv) vendor-advisory
VulnCheck Advisory: SurrealDB before 3.2.0 Denial of Service via malformed SurrealML import third-party-advisory