Vulnerabilities CVE-2026-63756

CVE-2026-63756

Critical

Open

TLP:CLEAR

SurrealDB before 3.1.0 Privilege Escalation via RPC Session Race Condition

NVD CVE.org

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Description

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.

Details

CVSS Score: 9.2
EPSS Score ⓘ: 0.27%

19.3th percentile
CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Confidence: 90%
Published: Jul 20, 2026
Last Modified: Jul 28, 2026

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