CVE-2025-71397

SurrealDB before 2.0.5, 2.1.x before 2.1.5, and 2.2.x before 2.2.2 allows authenticated users with OWNER or EDITOR permissions (at the root, namespace, or database level) to define custom database functions via DEFINE FUNCTION using nested FOR loops. Although a single loop's iteration count is constrained, nesting multiple loops (e.g., each with 1,000,000 iterations) is not, so an attacker can execute a function that consumes all server CPU time. Configured timeouts do not stop the execution, rendering the server unresponsive to other queries and connections until it is manually restarted.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/surrealdb/surrealdb/security/advisories/GHSA-pxw4-94j3-v9pf	Vendor Advisory
https://www.vulncheck.com/advisories/surrealdb-before-cpu-exhaustion-via-nested-for-loops	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:surrealdb:surrealdb::::::::
	cpe:2.3:a:surrealdb:surrealdb::::::::
	cpe:2.3:a:surrealdb:surrealdb::::::::

History

No history.

Information

Published : 2026-07-18 14:17

Updated : 2026-08-13 13:44

NVD link : CVE-2025-71397

Mitre link : CVE-2025-71397

CVE.ORG link : CVE-2025-71397

JSON object : View

Products Affected

surrealdb

surrealdb

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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Although a single loop's iteration count is constrained, nesting multiple loops (e.g., each with 1,000,000 iterations) is not, so an attacker can execute a function that consumes all server CPU time. 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