What is CVE-2026-63757?

CVE-2026-63757 is a high-severity vulnerability in Surrealdb, classified under Missing Authentication for Critical Function. CVSS score: 8.8/10. Published 2026-07-20.

How severe is CVE-2026-63757?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Surrealdb

CVE-2026-63757

SurrealDB versions before 3.1.0 contain a session hijacking vulnerability where the HTTP /rpc sessions method returns attached session UUIDs without authentication and accepts arbitrary session fields with no ownership verification. Unauth…

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Surrealdb — versions 0, 3.1.0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-63757?: CVE-2026-63757 is a high-severity vulnerability in Surrealdb, classified under Missing Authentication for Critical Function. CVSS score: 8.8/10. Published 2026-07-20.
How severe is CVE-2026-63757?: High severity. CVSS v3 base score is 8.8 out of 10.