SurrealDB before 3.2.0 Denial of Service via malformed SurrealML import
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA surrealdb (surrealdb) Fixed in 3.2.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
surrealdb 3.2.0
4 records Highest priority Priority LOW 4 LOW
Other records, highest priority first
- TI-2026-45322 SurrealDB before 3.2.0 Authentication Bypass via Custom APIPriority LOW 37
- TI-2026-45320 SurrealDB before 3.2.0 Permissions Bypass via PERMISSIONS ClausePriority LOW 24
- TI-2026-45323 SurrealDB before 3.2.0 SSRF via JWKS URL hostname resolutionPriority LOW 23
Timeline
- 2026-10-02 Threatist record created from CVE-2026-63734
- 2026-10-03 Alias added: GHSA-vm8f-3v3v-fhw4
References
More Surrealdb vulnerabilities
- TI-2026-45344 SurrealDB before 3.1.0 Session Hijacking via /rpc sessions CVSS 4.0HIGH 8.7
- TI-2024-38452 SurrealDB before 1.1.0 Denial of Service via HTTP Headers CVSS 4.0HIGH 8.7
- TI-2026-45347 SurrealDB before 3.1.0 Denial of Service via JSON Parser CVSS 4.0HIGH 8.7
- TI-2026-45334 SurrealDB before 3.1.0 Denial of Service via malformed RPC use CVSS 4.0HIGH 8.7
- TI-2025-43508 SurrealDB before 2.2.2 SurrealQL Injection via export CVSS 4.0CRITICAL 9.4
- TI-2026-45343 SurrealDB before 3.1.0 Privilege Escalation via RPC Session Race Condition CVSS 4.0CRITICAL 9.2
Sources
- CVE-2026-63734 · CVE Program
- CVE-2026-63734 · NVD
- FIRST EPSS
- GHSA-vm8f-3v3v-fhw4 · GitHub Advisory Database · CC BY 4.0
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