CVE-2026-121423

MEDIUM 6.5

SurrealDB before 3.3.0 DoS via Unbounded Recursion in val::Value Serialization

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-674
Vendor	surrealdb
Product	surrealdb
Published	Nov 3, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

surrealdb / surrealdb

0 < 3.3.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/surrealdb/surrealdb/security/advisories/GHSA-rpmq-gq3f-h6jg vulncheck.com: https://www.vulncheck.com/advisories/surrealdb-before-3.3.0-dos-via-unbounded-recursion-in-val-value-serialization

Credits

🔍 manus-use