CVE-2026-33722

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{"affected": [{"affectedData": [{"product": "n8n", "vendor": "n8n-io", "versions": [{"status": "affected", "version": "< 1.123.23"}, {"status": "affected", "version": ">= 2.0.0-rc.0, < 2.6.4"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "61F1C7CD-0418-46C8-9E78-01772C8AA31A", "versionEndExcluding": "1.123.23", "vulnerable": true}, {"criteria": "cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "90529240-9B89-400F-86BB-C71AECB88862", "versionEndExcluding": "2.6.4", "versionStartIncluding": "2.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "n8n is an open source workflow automation platform. Prior to versions 2.6.4 and 1.123.23, an authenticated user without permission to list external secrets could reference a secret by the external name in a credential and retrieve its plaintext value when saving the credential. This bypassed the `externalSecret:list` permission check and allowed access to secrets stored in connected vaults without admin or owner privileges. This issue requires the instance to have an external secrets vault configured. The attacker must know or be able to guess the name of a target secret. The issue has been fixed in n8n versions 1.123.23 and 2.6.4. Users should upgrade to one of these versions or later to remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the following temporary mitigations: Restrict n8n access to fully trusted users only, and/or disable external secrets integration until the patch can be applied. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures."}, {"lang": "es", "value": "n8n es una plataforma de automatizaci\u00f3n de flujos de trabajo de c\u00f3digo abierto. Antes de las versiones 2.6.4 y 1.123.23, un usuario autenticado sin permiso para listar secretos externos pod\u00eda referenciar un secreto por el nombre externo en una credencial y recuperar su valor en texto plano al guardar la credencial. Esto elud\u00eda la verificaci\u00f3n de permisos 'externalSecret:list' y permit\u00eda el acceso a secretos almacenados en b\u00f3vedas conectadas sin privilegios de administrador o propietario. Este problema requiere que la instancia tenga una b\u00f3veda de secretos externos configurada. El atacante debe conocer o ser capaz de adivinar el nombre de un secreto objetivo. El problema ha sido solucionado en las versiones 1.123.23 y 2.6.4 de n8n. Los usuarios deben actualizar a una de estas versiones o posteriores para remediar la vulnerabilidad. Si la actualizaci\u00f3n no es posible de inmediato, los administradores deben considerar las siguientes mitigaciones temporales: Restringir el acceso a n8n solo a usuarios de plena confianza, y/o deshabilitar la integraci\u00f3n de secretos externos hasta que se pueda aplicar el parche. Estas soluciones provisionales no remedian completamente el riesgo y solo deben usarse como medidas de mitigaci\u00f3n a corto plazo."}], "id": "CVE-2026-33722", "lastModified": "2026-06-17T10:37:59.303", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.3, "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": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/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": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33722", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-28T01:28:29.316953Z", "version": "2.0.3"}}]}, "published": "2026-03-25T19:16:51.153", "references": [{"source": "security-advisories@github.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-fxcw-h3qj-8m8p"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.123.23)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.0.0-rc.0,2.6.4)"}}], "enrichment": {"confidence": 82.0, "confidence_source": "matching", "scores": [{"score": 82.0, "source": "matching"}]}, "original": {"product": "n8n", "source": "cna", "vendor": "n8n-io"}, "product": "n8n", "vendor": "n8n"}], "analysis": {"en": {"generated_at": "2026-03-27T20:26:56.160340+00:00", "value": {"mitigation_remediation": ["Upgrade to n8n version 1.123.23, 2.6.4, or later.", "If an immediate upgrade is not possible, restrict n8n access to fully trusted users only.", "Alternatively, disable the external secrets integration until the patch can be applied."], "summary": {"action": "Immediate Patch", "impact": "Unauthorized Secret Disclosure"}, "threat_synthesis": {"affected_systems": "Affected vendors and versions include n8n\u2011io n8n prior to version 2.6.4 and version 1.123.23. The flaw is present only when an external secrets vault is configured, and the user must be able to guess or know the target secret's name.", "description_and_impact": "The vulnerability allows an authenticated user who does not have permission to list external secrets to read the plain text value of a secret when a credential is saved in n8n. By referencing a secret through its external name, the system bypasses the externalSecret:list permission check, exposing secrets stored in connected vaults that would normally require admin or owner privileges. This results in unauthorized disclosure of sensitive information.", "risk_and_exploitability": "The flaw carries a CVSS score of 7.3, indicating high severity, but an EPSS score of less than 1% suggests a low probability of exploitation. The vulnerability is not listed in the CISA KEV catalog. An attacker requires valid credentials, the ability to create or edit credentials, and knowledge of a secret name. Because the attack takes place within the n8n instance, the impact is confined to the secrets stored in the connected vault, but it can potentially compromise any sensitive data exposed through that vault."}}}}, "created": "2026-03-25T21:46:31.041847+00:00", "updated": "2026-03-29T20:28:14.509952+00:00", "vendors": ["n8n", "n8n$PRODUCT$n8n"]}