SurrealDB is Vulnerable to Unauthorized Data Exposure via LIVE Query Subscriptions

Description

LIVE SELECT statements are used to capture changes to data within a table in real time. Documents included in WHERE conditions and DELETE notifications were not properly reduced to respect the querying user's security context. Instead the leaked documents reflect the context of the user triggering the notification.

This allows a record or guest user with permissions to run live query subscriptions on a table to observe unauthorised records within the same table, when another user is altering or deleting these records, bypassing access controls.

Impact

A record or guest user with permissions to run live query subscriptions on a table is able to observe unauthorised records within the same table, with unauthorised records returned when deleted, or when records matching the WHERE conditions are created, updated, or deleted, by another user. This impacts confidentiality, limited to the table the attacker has access to, and with the data disclosed dependent of the actions taken by other users.

Patches

A patch has been created for the following versions:

  • Versions 2.1.9, 2.2.8 and 2.3.8 and later are not affected by this issue.
  • The first release following v3.0.0-alpha.7 will be patched.

Workarounds

Assess the impact of users with permissions on table records effectively having full read access to the table, use separate tables if required, with impacts to functionality.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2025-09-11 21:53:23 UTC
Updated
2025-09-26 16:58:08 UTC
GitHub reviewed
2025-09-11 21:53:23 UTC

EPSS Score

Score Percentile
0.04% 12.49%

CVSS Scores

Base score Version Severity Vector
6.9 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:L)
Low privileges are required.
User interaction (UI:P)
A user has to participate (for example click/open/approve).
Vulnerable system confidentiality impact (VC:H)
High confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:N)
No integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:N)
No availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.

Identifiers

CWEs

CWE id Name
CWE-863 Incorrect Authorization

Credits

  • kearfy (reporter)

Affected packages (4)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
rust SurrealDB >= 2.3.0, < 2.3.8 2.3.8
rust SurrealDB >= 2.2.0, < 2.2.8 2.2.8
rust SurrealDB < 2.1.9 2.1.9
rust SurrealDB >= 3.0.0-alpha.0, < 3.0.0-alpha.7 3.0.0-alpha.8

References

cvelogic Threat Intelligence