CVE-2026-63747

SurrealDB versions before 3.1.0 contain a denial of service vulnerability in the RPC use handler that panics when db is set without a namespace. Unauthenticated attackers can send a malformed WebSocket message to the /rpc endpoint to crash the server process.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/surrealdb/surrealdb/security/advisories/GHSA-wjjj-24cx-f28g	Vendor Advisory Mitigation
https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-malformed-rpc-use	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:*

History

22 Jul 2026, 15:43

Type	Values Removed	Values Added
First Time		Surrealdb Surrealdb surrealdb
References	~~() https://github.com/surrealdb/surrealdb/security/advisories/GHSA-wjjj-24cx-f28g -~~	() https://github.com/surrealdb/surrealdb/security/advisories/GHSA-wjjj-24cx-f28g - Vendor Advisory, Mitigation
References	~~() https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-malformed-rpc-use -~~	() https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-malformed-rpc-use - Third Party Advisory
CPE		cpe:2.3:a:surrealdb:surrealdb::::::::

20 Jul 2026, 12:19

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-20 12:19

Updated : 2026-07-22 15:43

NVD link : CVE-2026-63747

Mitre link : CVE-2026-63747

CVE.ORG link : CVE-2026-63747

JSON object : View

Products Affected

surrealdb

surrealdb

CWE

CWE-248

Uncaught Exception

{"id": "CVE-2026-63747", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.7, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "disclosure@vulncheck.com", "affectedData": [{"vendor": "surrealdb", "product": "surrealdb", "versions": [{"status": "affected", "version": "0", "lessThan": "3.1.0", "versionType": "semver"}, {"status": "unaffected", "version": "3.1.0", "versionType": "semver"}], "packageURL": "pkg:cargo/surrealdb", "defaultStatus": "unaffected"}]}], "published": "2026-07-20T12:19:44.300", "references": [{"url": "https://github.com/surrealdb/surrealdb/security/advisories/GHSA-wjjj-24cx-f28g", "tags": ["Vendor Advisory", "Mitigation"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-malformed-rpc-use", "tags": ["Third Party Advisory"], "source": "disclosure@vulncheck.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-248"}]}], "descriptions": [{"lang": "en", "value": "SurrealDB versions before 3.1.0 contain a denial of service vulnerability in the RPC use handler that panics when db is set without a namespace. Unauthenticated attackers can send a malformed WebSocket message to the /rpc endpoint to crash the server process."}], "lastModified": "2026-07-22T15:43:07.650", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "85C9B6E6-D944-4012-B4AD-CCA88E23D74C", "versionEndExcluding": "3.1.0"}], "operator": "OR"}]}], "sourceIdentifier": "disclosure@vulncheck.com"}