CVE-2025-71397 | SurrealDB before 2.0.5, 2.1.x before 2.1.5, and 2.2.x before… | CVSS 7.1 HIGH

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.

Metadata

CVE ID: CVE-2025-71397
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-07-16 12:14 UTC
Published: 2026-07-18 13:10 UTC
Last updated: 2026-07-18 13:10 UTC
Primary CWE: CWE-835
Loop with Unreachable Exit Condition ('Infinite Loop')
Vendor / Product: surrealdb / surrealdb
Sources: cve.org · NVD

Severity & Metrics

7.1 HIGH CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected products (3)

Vendor	Product	Platform	Versions
surrealdb	surrealdb	—	0 < 2.2.2, 2.2.2
surrealdb	surrealdb	—	0 < 2.1.5, 2.1.5
surrealdb	surrealdb	—	0 < 2.0.5, 2.0.5

Weakness (CWE)

CWE	Source	Description
CWE-835	cna	Loop with Unreachable Exit Condition ('Infinite Loop')

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.1	HIGH	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References (2)

GitHub Security Advisory (GHSA-pxw4-94j3-v9pf) https://github.com/surrealdb/surrealdb/security/advisories/GHSA-pxw4-94j3-v9pf
VulnCheck Advisory: SurrealDB before 2.2.2 CPU Exhaustion via nested FOR loops https://www.vulncheck.com/advisories/surrealdb-before-cpu-exhaustion-via-nested-for-loops