CVE-2026-63756

CRITICAL9.2

SurrealDB before 3.1.0 Privilege Escalation via RPC Session Race Condition

Published Jul 20, 2026

Modified 1 months ago

Details

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.

References

ADVISORY

https://github.com/surrealdb/surrealdb/security/advisories/GHSA-4vgr-h27g-cf9p

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-63756

ADVISORY

https://www.vulncheck.com/advisories/surrealdb-before-privilege-escalation-via-rpc-session-race-condition

CVSS Analysis

CVSS v4.0

9.2

Exploitability

Attack Vector