CVE-2025-71395

SurrealDB versions before 2.2.2 contain a memory exhaustion vulnerability in the string::replace function that fails to restrict resulting string length when using regex patterns. An authenticated attacker can craft a malicious query to exhaust server memory through unbounded string allocations, causing denial of service.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

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-3633-g6mg-p6qq	Vendor Advisory
https://www.vulncheck.com/advisories/surrealdb-before-memory-exhaustion-via-string-replace	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:surrealdb:surrealdb::::::::
	cpe:2.3:a:surrealdb:surrealdb::::::::
	cpe:2.3:a:surrealdb:surrealdb::::::::

History

No history.

Information

Published : 2026-07-18 14:17

Updated : 2026-08-19 17:51

NVD link : CVE-2025-71395

Mitre link : CVE-2025-71395

CVE.ORG link : CVE-2025-71395

JSON object : View

Products Affected

surrealdb

surrealdb

CWE

CWE-789

Memory Allocation with Excessive Size Value

{"id": "CVE-2025-71395", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-71395", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-22T19:09:25.666132Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 7.1, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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": "LOW", "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": "2.2.2", "versionType": "semver"}, {"status": "unaffected", "version": "2.2.2", "versionType": "semver"}], "packageURL": "pkg:cargo/SurrealDB", "defaultStatus": "unaffected"}, {"vendor": "surrealdb", "product": "surrealdb", "versions": [{"status": "affected", "version": "0", "lessThan": "2.1.5", "versionType": "semver"}, {"status": "unaffected", "version": "2.1.5", "versionType": "semver"}], "packageURL": "pkg:cargo/SurrealDB", "defaultStatus": "unaffected"}, {"vendor": "surrealdb", "product": "surrealdb", "versions": [{"status": "affected", "version": "0", "lessThan": "2.0.5", "versionType": "semver"}, {"status": "unaffected", "version": "2.0.5", "versionType": "semver"}], "packageURL": "pkg:cargo/SurrealDB", "defaultStatus": "unaffected"}]}], "published": "2026-07-18T14:17:10.963", "references": [{"url": "https://github.com/surrealdb/surrealdb/security/advisories/GHSA-3633-g6mg-p6qq", "tags": ["Vendor Advisory"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/surrealdb-before-memory-exhaustion-via-string-replace", "tags": ["Third Party Advisory"], "source": "disclosure@vulncheck.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-789"}]}], "descriptions": [{"lang": "en", "value": "SurrealDB versions before 2.2.2 contain a memory exhaustion vulnerability in the string::replace function that fails to restrict resulting string length when using regex patterns. An authenticated attacker can craft a malicious query to exhaust server memory through unbounded string allocations, causing denial of service."}], "lastModified": "2026-08-19T17:51:22.207", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D8978D31-3395-4155-8DFF-99FED3F8D7DA", "versionEndExcluding": "2.0.5"}, {"criteria": "cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D7A2AEC-83EE-46CC-BC91-D5EA1B841E96", "versionEndExcluding": "2.1.5", "versionStartIncluding": "2.1.0"}, {"criteria": "cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B4D2EDCC-A5D1-477A-ADA9-A32389A7D0BE", "versionEndExcluding": "2.2.2", "versionStartIncluding": "2.2.0"}], "operator": "OR"}]}], "sourceIdentifier": "disclosure@vulncheck.com"}