CVE-2025-71395 | SurrealDB versions before 2.2.2 contain a memory exhaustion … | CVSS 7.1 HIGH

Description

SurrealDB versions before 2.2.2 contain a memory exhaustion vulnerability in the string::replace function that fails to restrict resulting string length when using regex patterns. An authenticated attacker can craft a malicious query to exhaust server memory through unbounded string allocations, causing denial of service.

Metadata

CVE ID: CVE-2025-71395
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-789
Memory Allocation with Excessive Size Value
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-789	cna	Memory Allocation with Excessive Size Value

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-3633-g6mg-p6qq) https://github.com/surrealdb/surrealdb/security/advisories/GHSA-3633-g6mg-p6qq
VulnCheck Advisory: SurrealDB before 2.2.2 Memory Exhaustion via string::replace https://www.vulncheck.com/advisories/surrealdb-before-memory-exhaustion-via-string-replace