CVE-2026-63757
Received Received - Intake

Session Hijacking in SurrealDB via Unauthenticated RPC

Publication date: 2026-07-20

Last updated on: 2026-07-20

Assigner: VulnCheck

Description
SurrealDB versions before 3.1.0 contain a session hijacking vulnerability where the HTTP /rpc sessions method returns attached session UUIDs without authentication and accepts arbitrary session fields with no ownership verification. Unauthenticated attackers can enumerate session UUIDs and impersonate authenticated sessions to read, write, delete data and escalate privileges.

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Meta Information

Published
2026-07-20
Last Modified
2026-07-20
Generated
2026-07-21
AI Q&A
2026-07-20
EPSS Evaluated
N/A
NVD
CVE-2026-63757
EUVD
EUVD-2026-45928

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
surrealdb surrealdb to 3.1.0 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-306 The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

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Executive Summary

SurrealDB versions before 3.1.0 have a session hijacking vulnerability in the HTTP /rpc sessions method. It allows unauthenticated attackers to list session UUIDs and impersonate authenticated sessions without ownership verification. Attackers can then read, write, delete data, and escalate privileges.

Detection Guidance

To detect this vulnerability, check if SurrealDB versions before 3.1.0 are running. Inspect HTTP /rpc sessions endpoints for exposed session UUIDs without authentication. Monitor network traffic for unauthorized access attempts to /rpc sessions.

Impact Analysis

Unauthenticated attackers can hijack active sessions to access sensitive data, modify or delete records, and gain elevated privileges. Impacted users include those relying on HTTP /rpc with the attach method, while REST, WebSocket, and embedded usage are unaffected.

Compliance Impact

This vulnerability could lead to unauthorized data access, modification, or deletion, violating confidentiality and integrity requirements in GDPR and HIPAA. Organizations using affected versions may face compliance breaches and regulatory penalties.

Mitigation Strategies

Upgrade SurrealDB to version 3.1.0 or later. Avoid using HTTP /rpc attach calls. Prefer WebSocket or REST endpoints. Restrict /rpc access to trusted clients only. Implement network-level controls to block unauthorized access to /rpc sessions.

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