CVE-2026-121423 Details
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.
A denial-of-service vulnerability has been identified in SurrealDB versions prior to 3.3.0. This issue arises from unbounded recursion in the handling of deeply nested values, allowing authenticated users to cause a stack overflow by exploiting the database's value serialization process. Attackers can manipulate stored arrays by recursively wrapping them, which eventually leads to a process crash. The impact of this vulnerability is persistent, causing ongoing service disruption until the affected data is manually removed.
Users are advised to update to SurrealDB version 3.3.0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 3, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/surrealdb/surrealdb/security/advisories/GHSA-rpmq-gq3f-h6jg | [email protected] | AdvisoryExploitTechnical AnalysisVendor |
| https://www.vulncheck.com/advisories/surrealdb-before-3.3.0-dos-via-unbounded-recursion-in-val-value-serialization | [email protected] | AdvisoryVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-674 | Uncontrolled Recursion | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| SurrealDB | < 3.3.0 (semver) |
CPE
Remediation
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Change History
1 change record found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 3, 2026 | New CVE Received | [email protected] |