CVE-2026-5423

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5423", "assignerOrgId": "3b236295-4ccd-4a1f-a1c1-a72eecc8d7b6", "state": "PUBLISHED", "assignerShortName": "Neo4j", "dateReserved": "2026-04-02T13:17:29.975Z", "datePublished": "2026-08-06T15:15:29.124Z", "dateUpdated": "2026-08-06T15:45:22.183Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "3b236295-4ccd-4a1f-a1c1-a72eecc8d7b6", "shortName": "Neo4j", "dateUpdated": "2026-08-06T15:15:29.124Z"}, "title": "Subscription Authentication Bypass via Unverified connectionParams.jwt", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-302", "description": "CWE-302 Authentication bypass by Assumed-Immutable data", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-115", "descriptions": [{"lang": "en", "value": "CAPEC-115 Authentication Bypass"}]}], "affected": [{"vendor": "neo4j", "product": "graphql", "collectionURL": "https://registry.npmjs.org", "packageName": "@neo4j/graphql", "repo": "https://github.com/neo4j/graphql", "versions": [{"status": "affected", "version": "7.0.0", "lessThan": "7.5.6", "versionType": "semver"}, {"status": "affected", "version": "5.0.0", "lessThan": "5.12.14", "versionType": "semver"}, {"status": "affected", "version": "6.0.0", "lessThanOrEqual": "6.6.4", "versionType": "semver"}], "defaultStatus": "unaffected"}], "cpeApplicability": [{"operator": "OR", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:neo4j:graphql:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0.0", "versionEndExcluding": "7.5.6"}, {"vulnerable": true, "criteria": "cpe:2.3:a:neo4j:graphql:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0.0", "versionEndExcluding": "5.12.14"}, {"vulnerable": true, "criteria": "cpe:2.3:a:neo4j:graphql:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0.0", "versionEndIncluding": "6.6.4"}]}]}], "descriptions": [{"lang": "en", "value": "@neo4j/graphql\u00a0library versions prior to 7.5.6 fail to verify the authenticity of a client-supplied, pre-decoded JWT object passed through GraphQL subscription\u00a0connectionParams.\u00a0As a result, any unauthenticated remote client that can open a GraphQL-over-WebSocket connection can forge arbitrary JWT claims (e.g.\u00a0sub,\u00a0roles) in\u00a0connectionParams.jwt\u00a0and have them accepted as authenticated identity for the purposes of\u00a0@authentication\u00a0and\u00a0@subscriptionsAuthorization\u00a0directive evaluation. This allows a fully unauthenticated attacker to receive subscription events that should be restricted to specific authenticated roles/users.\nUpgrade the library to versions 7.5.6+ or 5.12.14+. v6 is end-of-life and will not receive a fix.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<code>@neo4j/graphql</code>&nbsp;library versions prior to 7.5.6 fail to verify the authenticity of a client-supplied, pre-decoded JWT object passed through GraphQL subscription&nbsp;<code>connectionParams.&nbsp;</code>As a result, any unauthenticated remote client that can open a GraphQL-over-WebSocket connection can forge arbitrary JWT claims (e.g.&nbsp;<code>sub</code>,&nbsp;<code>roles</code>) in&nbsp;<code>connectionParams.jwt</code>&nbsp;and have them accepted as authenticated identity for the purposes of&nbsp;<code>@authentication</code>&nbsp;and&nbsp;<code>@subscriptionsAuthorization</code>&nbsp;directive evaluation. This allows a fully unauthenticated attacker to receive subscription events that should be restricted to specific authenticated roles/users.<br>Upgrade the library to versions 7.5.6+ or 5.12.14+. v6 is end-of-life and will not receive a fix."}]}], "references": [{"url": "https://neo4j.com/security/CVE-2026-5423", "tags": ["vendor-advisory"]}, {"url": "https://github.com/neo4j/graphql/security/advisories/GHSA-fcpg-3fw5-vc65", "tags": ["third-party-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.2, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}}], "configurations": [{"lang": "en", "value": "The application enables `features.subscriptions` and `features.authorization`, and wires the subscriptions transport (e.g. `graphql-ws`) to forward WebSocket `connectionParams` into the resolver context.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>The application enables `features.subscriptions` and `features.authorization`, and wires the subscriptions transport (e.g. `graphql-ws`) to forward WebSocket `connectionParams` into the resolver context.</p>"}]}], "credits": [{"lang": "en", "value": "EQSTLab (https://github.com/EQSTLab)", "type": "reporter"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.2"}, "solutions": [{"lang": "en", "value": "Fixed in 5.12.14 (LTS) and 7.5.6 (current). The 6.x line is end-of-life and will not receive a patch; users on 6.x must upgrade to 5.12.14+ or 7.5.6+.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Fixed in 5.12.14 (LTS) and 7.5.6 (current). The 6.x line is end-of-life and will not receive a patch; users on 6.x must upgrade to 5.12.14+ or 7.5.6+.</p>"}]}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-06T15:45:16.532890Z", "id": "CVE-2026-5423", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-06T15:45:22.183Z"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5423", "assignerOrgId": "3b236295-4ccd-4a1f-a1c1-a72eecc8d7b6", "state": "PUBLISHED", "assignerShortName": "Neo4j", "dateReserved": "2026-04-02T13:17:29.975Z", "datePublished": "2026-08-06T15:15:29.124Z", "dateUpdated": "2026-08-06T15:45:22.183Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "3b236295-4ccd-4a1f-a1c1-a72eecc8d7b6", "shortName": "Neo4j", "dateUpdated": "2026-08-06T15:15:29.124Z"}, "title": "Subscription Authentication Bypass via Unverified connectionParams.jwt", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-302", "description": "CWE-302 Authentication bypass by Assumed-Immutable data", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-115", "descriptions": [{"lang": "en", "value": "CAPEC-115 Authentication Bypass"}]}], "affected": [{"vendor": "neo4j", "product": "graphql", "collectionURL": "https://registry.npmjs.org", "packageName": "@neo4j/graphql", "repo": "https://github.com/neo4j/graphql", "versions": [{"status": "affected", "version": "7.0.0", "lessThan": "7.5.6", "versionType": "semver"}, {"status": "affected", "version": "5.0.0", "lessThan": "5.12.14", "versionType": "semver"}, {"status": "affected", "version": "6.0.0", "lessThanOrEqual": "6.6.4", "versionType": "semver"}], "defaultStatus": "unaffected"}], "cpeApplicability": [{"operator": "OR", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:neo4j:graphql:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0.0", "versionEndExcluding": "7.5.6"}, {"vulnerable": true, "criteria": "cpe:2.3:a:neo4j:graphql:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0.0", "versionEndExcluding": "5.12.14"}, {"vulnerable": true, "criteria": "cpe:2.3:a:neo4j:graphql:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0.0", "versionEndIncluding": "6.6.4"}]}]}], "descriptions": [{"lang": "en", "value": "@neo4j/graphql\u00a0library versions prior to 7.5.6 fail to verify the authenticity of a client-supplied, pre-decoded JWT object passed through GraphQL subscription\u00a0connectionParams.\u00a0As a result, any unauthenticated remote client that can open a GraphQL-over-WebSocket connection can forge arbitrary JWT claims (e.g.\u00a0sub,\u00a0roles) in\u00a0connectionParams.jwt\u00a0and have them accepted as authenticated identity for the purposes of\u00a0@authentication\u00a0and\u00a0@subscriptionsAuthorization\u00a0directive evaluation. This allows a fully unauthenticated attacker to receive subscription events that should be restricted to specific authenticated roles/users.\nUpgrade the library to versions 7.5.6+ or 5.12.14+. v6 is end-of-life and will not receive a fix.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<code>@neo4j/graphql</code>&nbsp;library versions prior to 7.5.6 fail to verify the authenticity of a client-supplied, pre-decoded JWT object passed through GraphQL subscription&nbsp;<code>connectionParams.&nbsp;</code>As a result, any unauthenticated remote client that can open a GraphQL-over-WebSocket connection can forge arbitrary JWT claims (e.g.&nbsp;<code>sub</code>,&nbsp;<code>roles</code>) in&nbsp;<code>connectionParams.jwt</code>&nbsp;and have them accepted as authenticated identity for the purposes of&nbsp;<code>@authentication</code>&nbsp;and&nbsp;<code>@subscriptionsAuthorization</code>&nbsp;directive evaluation. This allows a fully unauthenticated attacker to receive subscription events that should be restricted to specific authenticated roles/users.<br>Upgrade the library to versions 7.5.6+ or 5.12.14+. v6 is end-of-life and will not receive a fix."}]}], "references": [{"url": "https://neo4j.com/security/CVE-2026-5423", "tags": ["vendor-advisory"]}, {"url": "https://github.com/neo4j/graphql/security/advisories/GHSA-fcpg-3fw5-vc65", "tags": ["third-party-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.2, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}}], "configurations": [{"lang": "en", "value": "The application enables `features.subscriptions` and `features.authorization`, and wires the subscriptions transport (e.g. `graphql-ws`) to forward WebSocket `connectionParams` into the resolver context.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>The application enables `features.subscriptions` and `features.authorization`, and wires the subscriptions transport (e.g. `graphql-ws`) to forward WebSocket `connectionParams` into the resolver context.</p>"}]}], "credits": [{"lang": "en", "value": "EQSTLab (https://github.com/EQSTLab)", "type": "reporter"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.2"}, "solutions": [{"lang": "en", "value": "Fixed in 5.12.14 (LTS) and 7.5.6 (current). The 6.x line is end-of-life and will not receive a patch; users on 6.x must upgrade to 5.12.14+ or 7.5.6+.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Fixed in 5.12.14 (LTS) and 7.5.6 (current). The 6.x line is end-of-life and will not receive a patch; users on 6.x must upgrade to 5.12.14+ or 7.5.6+.</p>"}]}]}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-5423", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-06T15:45:16.532890Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-06T15:45:19.111Z"}}]}}

{"affected": [{"affectedData": [{"collectionURL": "https://registry.npmjs.org", "defaultStatus": "unaffected", "packageName": "@neo4j/graphql", "product": "graphql", "repo": "https://github.com/neo4j/graphql", "vendor": "neo4j", "versions": [{"lessThan": "7.5.6", "status": "affected", "version": "7.0.0", "versionType": "semver"}, {"lessThan": "5.12.14", "status": "affected", "version": "5.0.0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.4", "status": "affected", "version": "6.0.0", "versionType": "semver"}]}], "source": "3b236295-4ccd-4a1f-a1c1-a72eecc8d7b6"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "@neo4j/graphql\u00a0library versions prior to 7.5.6 fail to verify the authenticity of a client-supplied, pre-decoded JWT object passed through GraphQL subscription\u00a0connectionParams.\u00a0As a result, any unauthenticated remote client that can open a GraphQL-over-WebSocket connection can forge arbitrary JWT claims (e.g.\u00a0sub,\u00a0roles) in\u00a0connectionParams.jwt\u00a0and have them accepted as authenticated identity for the purposes of\u00a0@authentication\u00a0and\u00a0@subscriptionsAuthorization\u00a0directive evaluation. This allows a fully unauthenticated attacker to receive subscription events that should be restricted to specific authenticated roles/users.\nUpgrade the library to versions 7.5.6+ or 5.12.14+. v6 is end-of-life and will not receive a fix."}, {"lang": "es", "value": "Las versiones de la biblioteca @neo4j/graphql anteriores a la 7.5.6 no verifican la autenticidad de un objeto JWT pre-decodificado suministrado por el cliente y pasado a trav\u00e9s de los \u201cconnectionParams\u201d de la suscripci\u00f3n GraphQL. Como resultado, cualquier cliente remoto no autenticado que pueda abrir una conexi\u00f3n GraphQL-over-WebSocket puede falsificar reclamaciones JWT arbitrarias (p. ej., \u2019sub\u2019, \u2019roles\u2019) en \u201cconnectionParams.jwt\u201d y hacer que se acepten como identidad autenticada para los prop\u00f3sitos de la evaluaci\u00f3n de las directivas \u201c@authentication\u201d y \u201c@subscriptionsAuthorization\u201d. Esto permite a un atacante completamente no autenticado recibir eventos de suscripci\u00f3n que deber\u00edan estar restringidos a roles/usuarios autenticados espec\u00edficos.\nActualice la biblioteca a las versiones 7.5.6+ o 5.12.14+. La v6 ha llegado al fin de su vida \u00fatil y no recibir\u00e1 una correcci\u00f3n."}], "id": "CVE-2026-5423", "lastModified": "2026-10-24T16:10:00.153", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.2, "baseSeverity": "HIGH", "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:P/PR:N/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "3b236295-4ccd-4a1f-a1c1-a72eecc8d7b6", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-5423", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-06T15:45:16.532890Z", "version": "2.0.3"}}]}, "published": "2026-08-06T16:16:44.430", "references": [{"source": "3b236295-4ccd-4a1f-a1c1-a72eecc8d7b6", "url": "https://github.com/neo4j/graphql/security/advisories/GHSA-fcpg-3fw5-vc65"}, {"source": "3b236295-4ccd-4a1f-a1c1-a72eecc8d7b6", "url": "https://neo4j.com/security/CVE-2026-5423"}], "sourceIdentifier": "3b236295-4ccd-4a1f-a1c1-a72eecc8d7b6", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-302"}], "source": "3b236295-4ccd-4a1f-a1c1-a72eecc8d7b6", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.0.0,7.5.6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.0.0,5.12.14)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.0.0,6.6.4]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "graphql", "source": "cna", "vendor": "neo4j"}, "product": "graphql", "vendor": "neo4j"}], "created": "2026-08-06T16:45:07.281880+00:00", "updated": "2026-08-06T17:45:03.173441+00:00", "vendors": ["neo4j", "neo4j$PRODUCT$graphql"]}