Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-63762

Severity CVSS v4.0:
MEDIUM
Type:
CWE-476 NULL Pointer Dereference
Publication date:
20/07/2026
Last modified:
22/07/2026

Description

SurrealDB before v2.6.1 (and before v3.0.0-beta.3) contains a denial of service vulnerability in its embedded JavaScript scripting engine, which is enabled via the --allow-scripting capability (disabled by default). Any user able to execute arbitrary queries — including unauthenticated guests when --allow-guests is enabled — can use built-in string functions to construct a large string and pass it to the JavaScript runtime for compilation, triggering a null pointer dereference in the underlying QuickJS-NG engine. This causes the server process to terminate immediately without graceful shutdown, requiring a manual restart. The issue was fixed by updating the rquickjs dependency from v0.9.0 to v0.11.0.

Impact

Vector 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS v4.0 Severity and Metrics:

Base Score: 6.00 MEDIUM
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): Present
Privileges Required (PR): Low
User Interaction (UI): None
Confidentiality (VC): None
Integrity (VI): None
Availability (VA): High
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None

Base Score 4.0
6.00
Severity 4.0
MEDIUM
Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
6.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:* 2.6.1 (excluding)
cpe:2.3:a:surrealdb:surrealdb:3.0.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:surrealdb:surrealdb:3.0.0:alpha10:*:*:*:*:*:*
cpe:2.3:a:surrealdb:surrealdb:3.0.0:alpha11:*:*:*:*:*:*
cpe:2.3:a:surrealdb:surrealdb:3.0.0:alpha12:*:*:*:*:*:*
cpe:2.3:a:surrealdb:surrealdb:3.0.0:alpha13:*:*:*:*:*:*
cpe:2.3:a:surrealdb:surrealdb:3.0.0:alpha14:*:*:*:*:*:*
cpe:2.3:a:surrealdb:surrealdb:3.0.0:alpha16:*:*:*:*:*:*
cpe:2.3:a:surrealdb:surrealdb:3.0.0:alpha17:*:*:*:*:*:*
cpe:2.3:a:surrealdb:surrealdb:3.0.0:alpha18:*:*:*:*:*:*
cpe:2.3:a:surrealdb:surrealdb:3.0.0:alpha2:*:*:*:*:*:*
cpe:2.3:a:surrealdb:surrealdb:3.0.0:alpha3:*:*:*:*:*:*
cpe:2.3:a:surrealdb:surrealdb:3.0.0:alpha4:*:*:*:*:*:*
cpe:2.3:a:surrealdb:surrealdb:3.0.0:alpha5:*:*:*:*:*:*
cpe:2.3:a:surrealdb:surrealdb:3.0.0:alpha6:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools