Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Surrealdb | Surrealdb | < 3.1.0 |
Related Weaknesses (CWE)
References
- https://github.com/surrealdb/surrealdb/security/advisories/GHSA-4vgr-h27g-cf9pVendor Advisory
- https://www.vulncheck.com/advisories/surrealdb-before-privilege-escalation-via-rThird Party Advisory
FAQ
What is CVE-2026-63756?
CVE-2026-63756 is a vulnerability with a CVSS score of 8.1 (HIGH). 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. Unauthenticate...
How severe is CVE-2026-63756?
CVE-2026-63756 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-63756?
Check the references section above for vendor advisories and patch information. Affected products include: Surrealdb Surrealdb.