Denial of Service Vulnerability in SurrealDB by SurrealDB Team
CVE-2026-63747

8.7HIGH

Key Information:

Vendor

Surrealdb

Status
Surrealdb
Vendor
CVE Published:
20 July 2026

What is CVE-2026-63747?

SurrealDB versions prior to 3.1.0 are susceptible to a denial of service vulnerability that arises when the RPC use handler encounters a database configuration without a specified namespace. This flaw allows unauthenticated attackers to exploit the /rpc endpoint by dispatching a malformed WebSocket message, consequently leading to the crash of the server process. To mitigate this risk, it is crucial for users to upgrade to the latest version and implement appropriate security measures.

Affected Version(s)

surrealdb 0 < 3.1.0

surrealdb 3.1.0

References

https://github.com/surrealdb/surrealdb/security/advisorie...
vendor-advisory
https://www.vulncheck.com/advisories/surrealdb-before-den...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.