CVE-2026-63756

SurrealDB versions before 3.1.0 contain a time-of-check/time-of-use race condition in the HTTP /rpc endpoint that allows unauthenticated requests to inherit authenticated session state. Unauthenticated attackers can send concurrent requests to the /rpc endpoint while legitimate authenticated traffic is active to execute operations with hijacked user privileges.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/surrealdb/surrealdb/security/advisories/GHSA-4vgr-h27g-cf9p	Vendor Advisory
https://www.vulncheck.com/advisories/surrealdb-before-privilege-escalation-via-rpc-session-race-condition	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:*

History

22 Jul 2026, 15:18

Type	Values Removed	Values Added
First Time		Surrealdb Surrealdb surrealdb
CPE		cpe:2.3:a:surrealdb:surrealdb::::::::
References	~~() https://github.com/surrealdb/surrealdb/security/advisories/GHSA-4vgr-h27g-cf9p -~~	() https://github.com/surrealdb/surrealdb/security/advisories/GHSA-4vgr-h27g-cf9p - Vendor Advisory
References	~~() https://www.vulncheck.com/advisories/surrealdb-before-privilege-escalation-via-rpc-session-race-condition -~~	() https://www.vulncheck.com/advisories/surrealdb-before-privilege-escalation-via-rpc-session-race-condition - Third Party Advisory

20 Jul 2026, 12:19

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-20 12:19

Updated : 2026-07-22 15:18

NVD link : CVE-2026-63756

Mitre link : CVE-2026-63756

CVE.ORG link : CVE-2026-63756

JSON object : View

Products Affected

surrealdb

surrealdb

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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