{ "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-2026-9135", "tracking": { "current_release_date": "2026-07-21T09:51:04.222593Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-9135", "initial_release_date": "2026-07-17T19:31:50.955844Z", "revision_history": [ { "date": "2026-07-17T19:31:50.955844Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-07-17T19:31:52.660239Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-07-17T19:44:48.742809Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| Product Identifiers created (2).| References created (1).| CWES updated (1)." }, { "date": "2026-07-17T19:44:59.885627Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-07-18T04:30:47.772848Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-07-18T16:09:30.380450Z", "number": "6", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-07-18T16:09:34.374218Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-07-20T10:25:22.537497Z", "number": "8", "summary": "Source connected.| CVE status created. (valid)| Products connected (1).| References created (16)." }, { "date": "2026-07-20T10:25:25.603325Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-07-20T18:26:30.340670Z", "number": "10", "summary": "Products connected (1).| Product Identifiers created (1)." }, { "date": "2026-07-20T18:26:32.710808Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-07-20T21:04:53.384380Z", "number": "12", "summary": "Unknown change." }, { "date": "2026-07-21T09:46:20.795248Z", "number": "13", "summary": "Source connected.| CVE status created. (valid)" } ], "status": "interim", "version": "13" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/oss <1.10.1", "product": { "name": "vers:unknown/oss <1.10.1", "product_id": "CSAFPID-8866234" } } ], "category": "product_name", "name": "Langflow Desktop" }, { "branches": [ { "category": "product_version_range", "name": "vers:semver/1.0.0|<=1.10.0", "product": { "name": "vers:semver/1.0.0|<=1.10.0", "product_id": "CSAFPID-8518276", "product_identification_helper": { "cpe": "cpe:2.3:a:ibm:langflow_oss:1.10.0:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Langflow OSS" } ], "category": "vendor", "name": "IBM" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=1.0.0|<1.10.1", "product": { "name": "vers:unknown/>=1.0.0|<1.10.1", "product_id": "CSAFPID-8867507", "product_identification_helper": { "cpe": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "langflow" } ], "category": "vendor", "name": "langflow" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-9135", "cwe": { "id": "CWE-94", "name": "Improper Control of Generation of Code ('Code Injection')" }, "notes": [ { "category": "description", "text": "IBM Langflow OSS 1.0.0 through 1.10.0 Langflow versions up to 1.9.2 (commit 94981c443d4918517b9e8163d70fc598dc33a32d) contain a code injection vulnerability in the Policies component's ToolGuard integration that bypasses the allow_custom_components=false security control. The vulnerability exists because the validation mechanism only checks the main component source code in node_template[\"code\"][\"value\"] but fails to validate dynamic CodeInput fields that store generated ToolGuard Python files. Attackers can embed malicious Python code in these unvalidated dynamic fields, which are persisted in Flow.data and later executed server-side when a guarded tool is invoked through the ToolGuard runtime. This allows authenticated users with flow creation privileges to achieve arbitrary Python code execution on the backend despite custom component restrictions. The vulnerability can be escalated through cross-tenant flow manipulation via the agentic MCP update_flow_component_field tool, which accepts attacker-controlled user_id parameters, enabling attackers to inject malicious code into victim users' flows. When combined with publicly accessible flows and specific misconfigurations (AUTO_LOGIN=true, NEW_USER_IS_ACTIVE=true), the attack can be conducted with reduced authentication requirements.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/9xxx/CVE-2026-9135.json" }, { "category": "description", "text": "IBM Langflow OSS 1.0.0 through 1.10.0 Langflow versions up to 1.9.2 (commit 94981c443d4918517b9e8163d70fc598dc33a32d) contain a code injection vulnerability in the Policies component's ToolGuard integration that bypasses the allow_custom_components=false security control. The vulnerability exists because the validation mechanism only checks the main component source code in node_template[\"code\"][\"value\"] but fails to validate dynamic CodeInput fields that store generated ToolGuard Python files. Attackers can embed malicious Python code in these unvalidated dynamic fields, which are persisted in Flow.data and later executed server-side when a guarded tool is invoked through the ToolGuard runtime. This allows authenticated users with flow creation privileges to achieve arbitrary Python code execution on the backend despite custom component restrictions. The vulnerability can be escalated through cross-tenant flow manipulation via the agentic MCP update_flow_component_field tool, which accepts attacker-controlled user_id parameters, enabling attackers to inject malicious code into victim users' flows. When combined with publicly accessible flows and specific misconfigurations (AUTO_LOGIN=true, NEW_USER_IS_ACTIVE=true), the attack can be conducted with reduced authentication requirements.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-9135" }, { "category": "other", "text": "0.00798", "title": "EPSS" }, { "category": "other", "text": "6.2", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Nvd, There is product data available from source Certbundde, Is related to an uncommon product vendor, The value of the most recent EPSS score, The value of the mean historic EPSS score", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, Is related to a product by vendor Ibm", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-8518276", "CSAFPID-8866234", "CSAFPID-8867507" ] }, "references": [ { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-9135" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/9xxx/CVE-2026-9135.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2410.json" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://advisories.ncsc.nl/advisory?id=NCSC-2026-0251" }, { "category": "external", "summary": "Reference - certbundde; cveprojectv5; nvd", "url": "https://www.ibm.com/support/pages/node/7278920" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2410.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2410" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7278921" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7278922" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7278923" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7278924" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7278925" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7278926" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7278927" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7278929" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7278930" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7278931" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7278932" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7278933" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7278934" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 9.9, "baseSeverity": "CRITICAL" }, "products": [ "CSAFPID-8518276", "CSAFPID-8866234", "CSAFPID-8867507" ] } ], "title": "CVE-2026-9135" } ] }