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 4.0

6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

4.9CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 40% of CVEs (scores of 2026-10-25)

CWE

CWE-20

Published

2026-07-20

Modified

2026-10-24

Record from

the NVD, synced 2026-10-25

Affected

• surrealdb:surrealdb

References

• https://github.com/surrealdb/surrealdb/security/advisories/GHSA-jwr6-6444-28xv
• https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-malformed-surrealml-import

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