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SurrealDB EUVDEUVD-2026-45911

| CVE-2026-63740 HIGH
Incorrect Authorization (CWE-863)
2026-07-20 disclosure@vulncheck.com GHSA-j6mj-v752-pp4x
7.1
CVSS 4.0 · Vendor: vulncheck
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Severity by source

Vendor (vulncheck) PRIMARY
7.1 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
6.5 MEDIUM

Network-reachable query interface (AV:N/AC:L), requires a valid record-scope login so PR:L, no user interaction; confidentiality-only disclosure of denied data with no integrity or availability impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (vulncheck).

CVSS VectorVendor: vulncheck

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

3
Patch available
Jul 20, 2026 - 15:33 EUVD
Analysis Generated
Jul 20, 2026 - 12:34 vuln.today
CVE Published
Jul 20, 2026 - 12:19 cve.org
HIGH 7.1

DescriptionCVE.org

SurrealDB versions before 3.1.4 fail to properly enforce SELECT permissions on array elements (field.*) for record users, leaking denied array elements instead of hiding them. Attackers with record scope access can read array elements that element-level permissions should deny by exploiting incorrect index handling during permission filtering.

AnalysisAI

Broken authorization in SurrealDB before 3.1.4 allows record-scoped (authenticated) users to read array elements that field-level SELECT permissions are supposed to hide. When permissions are evaluated against array fields using the field.* wildcard, denied elements are leaked back to the caller instead of being filtered out, because the engine mishandles element indexing during permission filtering (CWE-863). …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain record-scope account
Delivery
Query record with permission-filtered array field
Exploit
Trigger faulty field.* index filtering
Execution
Receive denied array elements
Impact
Exfiltrate restricted data

Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated record-scope (record user) account on a SurrealDB instance older than 3.1.4, and the target data must be an array field protected by element-level SELECT permissions expressed with the `field.*` wildcard - that schema pattern IS the precondition. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The supplied CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N, base 7.1) is internally consistent with the description: network-reachable, low complexity, requires low privileges (a valid record-scope account), no user interaction, and pure confidentiality impact with no integrity or availability effect. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker registers or obtains a normal record-scope account on an application backed by SurrealDB, then issues a SELECT query against a record containing an array field whose individual elements are protected by `field.*` permissions. Instead of receiving only the elements they are authorized to see, the response includes the denied elements, disclosing other users' or restricted data. …
Remediation Upgrade to SurrealDB 3.1.4 or later, which contains the corrected array-element permission filtering - Vendor-released patch: 3.1.4. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify all SurrealDB instances in production and catalog records with field-level array access controls; enable detailed audit logging for database queries targeting array fields. …

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EUVD-2026-45911 vulnerability details – vuln.today

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