CVE-2026-63756
SurrealDB before 3.1.0 Privilege Escalation via RPC Session Race Condition
- State
- Published
- Severity
- 9.2 Critical
- Published
- Jul 20, 2026
- Updated
- Jul 28, 2026
- Reserved
- Jul 18, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.2 Critical | 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 | VulnCheck |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Affected Products
| Product | Versions |
|---|---|
surrealdbsurrealdb |
|
References
- GitHub Security Advisory (GHSA-4vgr-h27g-cf9p)vendor-advisory
- VulnCheck Advisory: SurrealDB before 3.1.0 Privilege Escalation via RPC Session Race Conditionthird-party-advisory
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