Denial of Service Vulnerability in SurrealDB by SurrealDB
CVE-2026-63737

7.1HIGH

Key Information:

Vendor

Surrealdb

Status
Surrealdb
Vendor
CVE Published:
20 July 2026

What is CVE-2026-63737?

SurrealDB versions prior to 3.1.5 are susceptible to a denial of service vulnerability. Authenticated users can exploit this by sending malicious queries containing extensive chains of operators, which lead to unbounded expression trees. This scenario results in stack overflow during the processing of queries, ultimately crashing the server and interrupting service availability. Security measures should be taken to mitigate this risk.

Affected Version(s)

surrealdb 3.0.0 < 3.1.5

surrealdb 3.1.5

References

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

CVSS V4

Score:
7.1
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

.