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.
Metrics
Affected Vendors & Products
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References
History
Sat, 18 Jul 2026 13:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | SurrealDB before 2.2.2 CPU Exhaustion via nested FOR loops | |
| Weaknesses | CWE-835 | |
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cvssV4_0
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-07-18T13:10:15.129Z
Reserved: 2026-07-16T12:14:41.770Z
Link: CVE-2025-71397
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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