{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-33724", "tracking": { "current_release_date": "2026-03-27T21:14:12.321265Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-33724", "initial_release_date": "2026-03-25T18:38:54.279107Z", "revision_history": [ { "date": "2026-03-25T18:38:54.279107Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| References created (1).| CWES updated (1)." }, { "date": "2026-03-25T18:38:55.849381Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-25T19:30:32.969356Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-03-25T19:30:41.988483Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-25T20:39:33.343297Z", "number": "5", "summary": "Unknown change." }, { "date": "2026-03-25T23:16:42.960424Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-25T23:16:44.706541Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-26T00:21:22.087131Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (2).| CWES updated (1)." }, { "date": "2026-03-26T13:06:22.598016Z", "number": "9", "summary": "Source connected.| CVE status created. (valid)| Products connected (2).| References created (17)." }, { "date": "2026-03-26T13:06:24.707730Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-03-26T15:01:20.587164Z", "number": "11", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-26T15:01:29.537864Z", "number": "12", "summary": "NCSC Score updated." }, { "date": "2026-03-27T21:14:03.143513Z", "number": "13", "summary": "CVSS created.| Products connected (1).| Product Identifiers created (1)." }, { "date": "2026-03-27T21:14:05.797889Z", "number": "14", "summary": "NCSC Score updated." } ], "status": "interim", "version": "14" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<2.13.4", "product": { "name": "vers:unknown/<2.13.4", "product_id": "CSAFPID-5917555" } }, { "category": "product_version_range", "name": "vers:unknown/<2.5.0", "product": { "name": "vers:unknown/<2.5.0", "product_id": "CSAFPID-5547884", "product_identification_helper": { "cpe": "cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*" } } } ], "category": "product_name", "name": "n8n" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-5446927", "product_identification_helper": { "cpe": "cpe:/a:n8n:n8n:-" } } } ], "category": "product_name", "name": "n8n n8n" } ], "category": "vendor", "name": "n8n" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<2.5.0", "product": { "name": "vers:unknown/<2.5.0", "product_id": "CSAFPID-5526237" } }, { "category": "product_version_range", "name": "vers:unknown/>=0|<2.5.0", "product": { "name": "vers:unknown/>=0|<2.5.0", "product_id": "CSAFPID-5912500" } } ], "category": "product_name", "name": "n8n" } ], "category": "vendor", "name": "n8n-io" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-33724", "cwe": { "id": "CWE-639", "name": "Authorization Bypass Through User-Controlled Key" }, "notes": [ { "category": "description", "text": "n8n is an open source workflow automation platform. Prior to version 2.5.0, when the Source Control feature is configured to use SSH, the SSH command used for git operations explicitly disabled host key verification. A network attacker positioned between the n8n instance and the remote Git server could intercept the connection and present a fraudulent host key, potentially injecting malicious content into workflows or intercepting repository data. This issue only affects instances where the Source Control feature has been explicitly enabled and configured to use SSH (non-default). The issue has been fixed in n8n version 2.5.0. Users should upgrade to this version or later to remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the following temporary mitigations: Disable the Source Control feature if it is not actively required, and/or restrict network access to ensure the n8n instance communicates with the Git server only over trusted, controlled network paths. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33724.json" }, { "category": "description", "text": "n8n is an open source workflow automation platform. Prior to version 2.5.0, when the Source Control feature is configured to use SSH, the SSH command used for git operations explicitly disabled host key verification. A network attacker positioned between the n8n instance and the remote Git server could intercept the connection and present a fraudulent host key, potentially injecting malicious content into workflows or intercepting repository data. This issue only affects instances where the Source Control feature has been explicitly enabled and configured to use SSH (non-default). The issue has been fixed in n8n version 2.5.0. Users should upgrade to this version or later to remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the following temporary mitigations: Disable the Source Control feature if it is not actively required, and/or restrict network access to ensure the n8n instance communicates with the Git server only over trusted, controlled network paths. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33724" }, { "category": "description", "text": "## Impact\nWhen the Source Control feature is configured to use SSH, the SSH command used for git operations explicitly disabled host key verification. A network attacker positioned between the n8n instance and the remote Git server could intercept the connection and present a fraudulent host key, potentially injecting malicious content into workflows or intercepting repository data.\n\n- This issue only affects instances where the Source Control feature has been explicitly enabled and configured to use SSH (non-default).\n\n## Patches\nThe issue has been fixed in n8n version 2.5.0. Users should upgrade to this version or later to remediate the vulnerability.\n\n## Workarounds\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Disable the Source Control feature if it is not actively required.\n- Restrict network access to ensure the n8n instance communicates with the Git server only over trusted, controlled network paths.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.", "title": "github - https://api.github.com/advisories/GHSA-43v7-fp2v-68f6" }, { "category": "description", "text": "## Impact\nWhen the Source Control feature is configured to use SSH, the SSH command used for git operations explicitly disabled host key verification. A network attacker positioned between the n8n instance and the remote Git server could intercept the connection and present a fraudulent host key, potentially injecting malicious content into workflows or intercepting repository data.\n\n- This issue only affects instances where the Source Control feature has been explicitly enabled and configured to use SSH (non-default).\n\n## Patches\nThe issue has been fixed in n8n version 2.5.0. Users should upgrade to this version or later to remediate the vulnerability.\n\n## Workarounds\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Disable the Source Control feature if it is not actively required.\n- Restrict network access to ensure the n8n instance communicates with the Git server only over trusted, controlled network paths.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/npm%2FGHSA-43v7-fp2v-68f6.json?alt=media" }, { "category": "other", "text": "0.00013", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:L", "title": "CVSSV4" }, { "category": "other", "text": "6.3", "title": "CVSSV4 base score" }, { "category": "other", "text": "4.9", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "The value of the most recent EPSS score, Is related to (a version of) an uncommon product", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5526237", "CSAFPID-5912500", "CSAFPID-5446927", "CSAFPID-5917555", "CSAFPID-5547884" ] }, "references": [ { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33724.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33724" }, { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-43v7-fp2v-68f6" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/npm%2FGHSA-43v7-fp2v-68f6.json?alt=media" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0877.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Reference - certbundde; cveprojectv5; github; nvd; osv", "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-43v7-fp2v-68f6" }, { "category": "external", "summary": "Reference - github; osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33724" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-43v7-fp2v-68f6" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0877.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0877" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-58qr-rcgv-642v" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-fxcw-h3qj-8m8p" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-m63j-689w-3j35" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-mxrg-77hm-89hv" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-q4fm-pjq6-m63g" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-qfc3-hm4j-7q77" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-vpgc-2f6g-7w7x" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-w673-8fjw-457c" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-w83q-mcmx-mh42" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-xvh5-5qg4-x9qp" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-364x-8g5j-x2pr" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-3c7f-5hgj-h279" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/advisories/GHSA-c545-x2rh-82fc" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/n8n-io/n8n/releases" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "baseScore": 7.4, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-5446927", "CSAFPID-5526237", "CSAFPID-5547884", "CSAFPID-5912500", "CSAFPID-5917555" ] } ], "title": "CVE-2026-33724" } ] }