CVE-2026-63754 | SurrealDB versions before 3.1.0 contain a denial of service … | CVSS 6.5 MEDIUM

Description

SurrealDB versions before 3.1.0 contain a denial of service vulnerability where malicious LIVE queries with WHERE clauses that evaluate to errors cause all CREATE, UPDATE, and DELETE operations on the watched table to fail. An authenticated user with only select permission can prevent write operations on a table for any user, including root, by registering a LIVE query that triggers evaluation errors until the query is killed or the session ends.

Metadata

CVE ID: CVE-2026-63754
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-07-18 12:30 UTC
Published: 2026-07-20 12:04 UTC
Last updated: 2026-07-20 12:52 UTC
Primary CWE: CWE-754
Improper Check for Unusual or Exceptional Conditions
Vendor / Product: surrealdb / surrealdb
Sources: cve.org · NVD

Severity & Metrics

6.5 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
surrealdb	surrealdb	—	0 < 3.1.0, 3.1.0

Weakness (CWE)

CWE	Source	Description
CWE-754	cna	Improper Check for Unusual or Exceptional Conditions

CVSS scores (2)

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
6.5	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References (2)

GitHub Security Advisory (GHSA-4v76-cw68-4vc9) https://github.com/surrealdb/surrealdb/security/advisories/GHSA-4v76-cw68-4vc9
VulnCheck Advisory: SurrealDB before 3.1.0 Denial of Service via LIVE Query https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-live-query