CVE-2026-63756

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.

CVSS Vector

References

• https://github.com/surrealdb/surrealdb/security/advisories/GHSA-4vgr-h27g-cf9p
• https://www.vulncheck.com/advisories/surrealdb-before-privilege-escalation-via-rpc-session-race-condition