Vulnerability · Published Nov 3, 2026 · Assigned by VulnCheck
CVE-2026-121423SurrealDB before 3.3.0 DoS via Unbounded Recursion in val::Value Serialization
Medium 6.5
In plain English
A medium-severity security flaw in surrealdb from surrealdb. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 72.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
SurrealDB before 3.3.0 contains an unbounded recursion vulnerability that allows authenticated users to abort the surreald process by triggering stack overflow on deeply nested values. Attackers can repeatedly run UPDATE statements wrapping a stored array in itself, then SELECT or EXPORT it, causing persistent denial of service for all tenants.
Affected products (as reported)
Weakness: CWE-674 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
- GitHub Security Advisory (GHSA-rpmq-gq3f-h6jg) vendor-advisory
- VulnCheck Advisory: SurrealDB before 3.3.0 DoS via Unbounded Recursion in val::Value Serialization third-party-advisory