Medium severity · published Jul 20, 2026
CVE-2026-63734
SurrealDB before 3.2.0 Denial of Service via malformed SurrealML import
4.9
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SU
surrealdb · surrealdb
before 3.2.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63734
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-63734
Vendor Advisory
https://github.com/surrealdb/surrealdb/security/advisories/GHSA-jwr6-6444-28xv
Third Party Advisory
https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-malformed-surrealml-import
More from surrealdb
8.8
CVE-2026-63763
SurrealDB before 2.5.0 Privilege Escalation via Future Fields
8.8
CVE-2026-63757
SurrealDB before 3.1.0 Session Hijacking via /rpc sessions
8.8
CVE-2025-71390
SurrealDB before 2.3.6 deny-net Bypass via DNS Resolution
8.8
CVE-2024-58366
SurrealDB before 1.1.1 Format String via Scripting Functions
8.8
CVE-2024-58362
SurrealDB before 1.5.5 Query Injection via RPC API
