CVE-2026-63760 Details
Description
SurrealDB before 3.1.0 fails to enforce the configured recursion depth limit in the value and JSON parser when processing nested braces, brackets, or parentheses. Unauthenticated attackers can send deeply nested JSON payloads to the WebSocket /rpc endpoint to exhaust server memory and crash the process.
A denial-of-service vulnerability has been identified in SurrealDB versions prior to 3.1.0. The issue arises because the value and JSON parser do not properly enforce the configured recursion depth limit when handling nested braces, brackets, or parentheses. This flaw allows unauthenticated attackers to send deeply nested JSON payloads to the WebSocket /rpc endpoint, causing excessive memory consumption that crashes the server process.
Users can upgrade to SurrealDB version 3.1.0 or later to address this vulnerability. Additionally, network access to the WebSocket /rpc endpoint can be restricted to trusted clients.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/surrealdb/surrealdb/security/advisories/GHSA-q729-696q-g9pq | [email protected] | Vendor AdvisoryMitigation |
| https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-json-parser | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-674 | Uncontrolled Recursion | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| surrealdb surrealdb | < 3.1.0 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | Initial Analysis | [email protected] |
| Jul 20, 2026 | CVE Modified | CISA-ADP |
| Jul 20, 2026 | New CVE Received | [email protected] |