CVE-2026-63760 · Symaro Security Advisory

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.

Severity (CVSS)

Base score	8.7
Severity	High
Version	CVSS 4.0
Vector	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Provided by	CNA

Weaknesses

CWE-674 — Uncontrolled Recursion

Affected products

Vendor	Product	Versions
surrealdb	surrealdb	0 to <3.1.0; 3.1.0

References

https://github.com/surrealdb/surrealdb/security/advisories/GHSA-q729-696q-g9pq (vendor-advisory)
https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-json-parser (third-party-advisory)

Authoritative sources

This page is a snapshot. For the latest enrichment and updates, view the record on CVE.org or the NVD.

Generated from the official CVE List on 21 Jul 2026 07:01 UTC.