CVE-2026-121423
Published:November 03, 2026
Updated:November 04, 2026
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 Packages
https://github.com/surrealdb/surrealdb.git (GITHUB):
Affected version(s) >=v1.0.0-beta.1 <v3.3.0 || >=v2.0.0-alpha.1 <v3.3.0 || >=v3.0.0-alpha.1 <v3.3.0 || >=v3.3.0-beta.1 <v3.3.0Fix Suggestion:
Update to version v3.3.0surrealdb-expr (RUST):
Affected version(s) >=3.3.0-beta.1 <3.3.0Fix Suggestion:
Update to version 3.3.0surrealdb-core (RUST):
Affected version(s) >=1.1.1 <3.3.0 || >=3.0.0-alpha.8 <3.3.0 || >=2.0.0-alpha.1 <3.3.0Fix Suggestion:
Update to version 3.3.0surrealdb-catalog (RUST):
Affected version(s) >=3.3.0-beta.1 <3.3.0Fix Suggestion:
Update to version 3.3.0surrealdb (RUST):
Affected version(s) >=3.0.0-alpha.8 <3.3.0 || >=2.0.0 <3.3.0 || >=3.3.0-beta.1 <3.3.0 || >=1.0.0-beta.1 <3.3.0Fix Suggestion:
Update to version 3.3.0Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Uncontrolled Recursion
EPSS
Base Score:
0.34