Medium severity · published Jul 20, 2026
CVE-2026-63759
SurrealDB before 3.1.0 Denial of Service nested type annotations
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
SurrealDB before 3.1.0 fails to enforce recursion depth limits in the type/kind parser when processing nested type annotations. Authenticated attackers can send queries with deeply nested type annotations to exhaust server memory and crash the process.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SU
surrealdb · surrealdb
before 3.1.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63759
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-63759
Mitigation
https://github.com/surrealdb/surrealdb/security/advisories/GHSA-q8qp-67f9-wr3f
Third Party Advisory
https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-nested-type-annotations
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