CVE-2026-63747
SurrealDB before 3.1.0 Denial of Service via malformed RPC use
Description
SurrealDB versions before 3.1.0 contain a denial of service vulnerability in the RPC use handler that panics when db is set without a namespace. Unauthenticated attackers can send a malformed WebSocket message to the /rpc endpoint to crash the server process.
INFO
Published Date :
July 20, 2026, 12:19 p.m.
Last Modified :
July 23, 2026, 8:17 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update SurrealDB to version 3.1.0 or later.
- Ensure proper namespace handling in RPC requests.
- Validate all incoming WebSocket messages.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-63747.
| URL | Resource |
|---|---|
| https://github.com/surrealdb/surrealdb/security/advisories/GHSA-wjjj-24cx-f28g | Mitigation Vendor Advisory |
| https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-malformed-rpc-use | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-63747 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-63747
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-63747 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-63747 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 23, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-63747', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-23T19:19:46.093644Z'} -
Initial Analysis by [email protected]
Jul. 22, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:* versions up to (excluding) 3.1.0 Added Reference Type VulnCheck: https://github.com/surrealdb/surrealdb/security/advisories/GHSA-wjjj-24cx-f28g Types: Mitigation, Vendor Advisory Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-malformed-rpc-use Types: Third Party Advisory -
New CVE Received by [email protected]
Jul. 20, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'surrealdb', 'product': 'surrealdb', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '3.1.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '3.1.0', 'versionType': 'semver'}], 'packageURL': 'pkg:cargo/surrealdb', 'defaultStatus': 'unaffected'}] Added Description SurrealDB versions before 3.1.0 contain a denial of service vulnerability in the RPC use handler that panics when db is set without a namespace. Unauthenticated attackers can send a malformed WebSocket message to the /rpc endpoint to crash the server process. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-248 Added Reference https://github.com/surrealdb/surrealdb/security/advisories/GHSA-wjjj-24cx-f28g Added Reference https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-malformed-rpc-use