CVE-2026-30938

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{"affected": [{"affectedData": [{"product": "parse-server", "vendor": "parse-community", "versions": [{"status": "affected", "version": "< 8.6.12"}, {"status": "affected", "version": ">= 9.0.0 < 9.5.1-alpha.1"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "6E0FDB8C-85B2-4164-96ED-BA4363BC8EC1", "versionEndExcluding": "8.6.12", "vulnerable": true}, {"criteria": "cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "26F5C19E-B18E-4539-953A-92778F5F09E6", "versionEndExcluding": "9.5.1", "versionStartIncluding": "9.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.12 and 9.5.1-alpha.1, the requestKeywordDenylist security control can be bypassed by placing any nested object or array before a prohibited keyword in the request payload. This is caused by a logic bug that stops scanning sibling keys after encountering the first nested value. Any custom requestKeywordDenylist entries configured by the developer are equally by-passable using the same technique. All Parse Server deployments are affected. The requestKeywordDenylist is enabled by default. This vulnerability is fixed in 8.6.12 and 9.5.1-alpha.1. Use a Cloud Code beforeSave trigger to validate incoming data for prohibited keywords across all classes."}, {"lang": "es", "value": "Parse Server es un backend de c\u00f3digo abierto que puede ser desplegado en cualquier infraestructura que pueda ejecutar Node.js. Antes de las versiones 8.6.12 y 9.5.1-alpha.1, el control de seguridad requestKeywordDenylist puede ser eludido al colocar cualquier objeto o array anidado antes de una palabra clave prohibida en la carga \u00fatil de la solicitud. Esto es causado por un error de l\u00f3gica que detiene el escaneo de claves hermanas despu\u00e9s de encontrar el primer valor anidado. Cualquier entrada personalizada de requestKeywordDenylist configurada por el desarrollador es igualmente eludible utilizando la misma t\u00e9cnica. Todas las implementaciones de Parse Server est\u00e1n afectadas. El requestKeywordDenylist est\u00e1 habilitado por defecto. Esta vulnerabilidad est\u00e1 corregida en las versiones 8.6.12 y 9.5.1-alpha.1. Utilice un disparador beforeSave de Cloud Code para validar los datos entrantes en busca de palabras clave prohibidas en todas las clases."}], "id": "CVE-2026-30938", "lastModified": "2026-06-17T10:33:11.180", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-30938", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-10T16:56:19.410227Z", "version": "2.0.3"}}]}, "published": "2026-03-10T18:18:53.610", "references": [{"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/parse-community/parse-server/releases/tag/8.6.12"}, {"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/parse-community/parse-server/releases/tag/9.5.1-alpha.1"}, {"source": "security-advisories@github.com", "tags": ["Mitigation", "Patch", "Vendor Advisory"], "url": "https://github.com/parse-community/parse-server/security/advisories/GHSA-q342-9w2p-57fp"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-693"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,8.6.12)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[9.0.0,9.5.1-alpha.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "parse-server", "source": "cna", "vendor": "parse-community"}, "product": "parse_server", "vendor": "parse_community"}], "analysis": {"en": {"generated_at": "2026-04-18T09:38:55.882590+00:00", "value": {"mitigation_remediation": ["Upgrade Parse Server to version 8.6.12 or later, or to 9.5.1\u2011alpha.1 or newer, which includes the fix for the denylist bypass.", "If an immediate upgrade is not possible, add a Cloud Code beforeSave trigger that inspects all incoming data for prohibited keywords across all classes and rejects or sanitizes matching payloads.", "As a temporary containment measure, implement application\u2011layer checks that detect requests containing nested objects or arrays preceding banned keywords and block them before they reach Parse Server."], "summary": {"action": "Patch Immediately", "impact": "Denial List Bypass"}, "threat_synthesis": {"affected_systems": "All parse\u2011community Parse Server deployments that run a version earlier than 8.6.12 or 9.5.1\u2011alpha.1 are affected. Because the requestKeywordDenylist is enabled by default, every installation that has not applied the patch is vulnerable. The software runs on any infrastructure that can host Node.js.", "description_and_impact": "Parse Server uses a requestKeywordDenylist to block payloads containing disallowed keywords. Prior to versions 8.6.12 and 9.5.1\u2011alpha.1, the denylist logic stops scanning when it first encounters a nested object or array. As a result, an attacker can place a nested structure before a blocked keyword in the JSON request, causing the denylist to be bypassed. This flaw is a protection mechanism failure (CWE\u2011693) and undermines the integrity protection that developers rely on.", "risk_and_exploitability": "Based on the description, it is inferred that the attacker can exploit the vulnerability by sending a crafted JSON payload with a nested object or array that places a prohibited keyword after the nesting. The CVSS score of 6.9 denotes medium severity. The EPSS score of less than 1% indicates that exploitation has not been widely observed but still possible. The vulnerability is not listed in the CISA KEV catalog. If the API endpoints are reachable without authentication, an unauthenticated attacker may also use the bypass. The attack requires only network access to the Parse Server API and is straightforward to execute once the application is in use."}}}}, "created": "2026-03-11T11:49:44.086011+00:00", "updated": "2026-04-18T09:45:25.834884+00:00", "vendors": ["parse_community", "parse_community$PRODUCT$parse_server"]}