NCSC-2026-0251

Vulnerability from csaf_ncscnl - Published: 2026-07-21 09:42 - Updated: 2026-07-21 09:42
Summary
Kwetsbaarheden verholpen in IBM Langflow OSS
Notes
The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions: NCSC-NL makes every reasonable effort to ensure that the content of this page 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 continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein. NCSC-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 this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory. This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings.
Feiten: IBM heeft meerdere kwetsbaarheden verholpen in IBM Langflow OSS versies 1.0.0 tot en met 1.10.0.
Interpretaties: De kwetsbaarheden in IBM Langflow OSS betreffen onder andere: - het uitvoeren van willekeurige bestandswijzigingen door geauthenticeerde gebruikers via speciaal opgemaakte Content-Disposition headers - server-side request forgery (SSRF) door onveilige standaardconfiguraties - remote code execution (RCE) door onvoldoende validatie van MCP serverconfiguratiebestanden - geauthenticeerde gebruikers kunnen bestanden lezen, waaronder de JWT signing key, wat het mogelijk maakt authenticatietokens te vervalsen - een kwetsbaarheid in de apply_tweaks() functie die parameteroverriding via de API toestaat en unsafe deserialisatie in de AsyncDiskCache class die RCE mogelijk maakt - het POST /api/v1/validate/code endpoint voert gebruikersgeleverde Python code uit zonder sandboxing, wat volledige servercontrole kan geven - de webhook authenticatiemechanismen kunnen worden omzeild als de WEBHOOK_AUTH_ENABLE parameter op False staat, waardoor ongeauthenticeerde gebruikers flows kunnen uitvoeren - ook is er een privilege escalation mogelijk tot superuser via het misbruiken van Langflow service permissies - een path traversal kwetsbaarheid in de APIRequest component maakt het mogelijk om bestanden op ongewenste locaties te schrijven - het /api/v1/login/auto_login endpoint kan bij ingeschakelde AUTO_LOGIN feature langelevensduur superuser tokens uitgeven zonder authenticatie, mede verergerd door permissieve CORS instellingen - de Policies component bevat een code injection kwetsbaarheid in de ToolGuard integratie, waarbij geauthenticeerde gebruikers met flow creatie rechten arbitrary Python code kunnen uitvoeren - ongeauthenticeerde aanvallers kunnen superuser tokens verkrijgen en daarmee volledige remote code execution uitvoeren op standaardinstallaties. Tevens kunnen zij een onbeperkt aantal actieve gebruikersaccounts aanmaken als de NEW_USER_IS_ACTIVE parameter op true staat, waarmee ze de AUTO_LOGIN restricties kunnen omzeilen en toegang krijgen tot remote code execution endpoints.
Oplossingen: IBM heeft updates uitgebracht om de kwetsbaarheden in IBM Langflow OSS te verhelpen. Zie bijgevoegde referenties voor meer informatie.
Kans: medium
Schade: high
CWE-20: Improper Input Validation
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-23: Relative Path Traversal
CWE-94: Improper Control of Generation of Code ('Code Injection')
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CWE-265: Privilege Issues
CWE-275: Permission Issues
CWE-287: Improper Authentication
CWE-306: Missing Authentication for Critical Function
CWE-502: Deserialization of Untrusted Data
CWE-918: Server-Side Request Forgery (SSRF)
CVE-2026-7667

IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a vulnerability allowing authenticated attackers to write arbitrary files to any path accessible by the Langflow process via a malicious flow with a crafted Content-Disposition header.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
CVE-2026-7754

IBM Langflow OSS versions 1.0.0 through 1.10.0, including Langflow 1.9.0, contain a server-side request forgery (SSRF) vulnerability due to insecure default configurations and incomplete SSRF protection enforcement.

7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CWE-918 - Server-Side Request Forgery (SSRF)
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
CVE-2026-7755

IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a remote code execution vulnerability caused by incomplete validation enforcement on MCP server configuration files.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
CVE-2026-7872

IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a vulnerability allowing authenticated attackers to read arbitrary files, including the JWT signing key, enabling token forgery for any user.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
CVE-2026-8056

IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a critical security flaw in the apply_tweaks() function that permits authenticated users to override component parameters at runtime via the API due to improper parameter filtering.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
CVE-2026-8476

IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the AsyncDiskCache class due to unsafe deserialization, enabling attackers with file system or API access to execute arbitrary code.

9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-502 - Deserialization of Untrusted Data
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
CVE-2026-8481

IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the POST /api/v1/validate/code endpoint that allows authenticated users to execute arbitrary system commands with full server privileges.

9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
CVE-2026-8505

IBM Langflow OSS versions 1.0.0 to 1.10.0 have a webhook authentication vulnerability allowing unauthenticated users to bypass API key validation and execute any flow when WEBHOOK_AUTH_ENABLE is set to False, risking remote code execution.

9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-306 - Missing Authentication for Critical Function
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
CVE-2026-8635

IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a critical vulnerability allowing authenticated users to escalate privileges to superuser and execute arbitrary system commands via Langflow service permissions.

9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
CVE-2026-8859

IBM Langflow versions 1.0.0 through 1.10.0 have a path traversal vulnerability in the APIRequest component's 'Save to File' feature, allowing attackers to write arbitrary files via unsanitized filenames from HTTP response headers.

9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
CVE-2026-9103

IBM Langflow OSS versions 1.0.0 to 1.10.0 contain a critical vulnerability in the /api/v1/login/auto_login endpoint that issues long-lived superuser tokens without authentication when AUTO_LOGIN is enabled, with permissive CORS settings increasing token exposure risk.

9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-306 - Missing Authentication for Critical Function
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
CVE-2026-9135

IBM Langflow OSS versions up to 1.9.2 have a code injection vulnerability in the Policies component's ToolGuard integration, allowing authenticated users with flow creation rights to execute arbitrary Python code via unvalidated dynamic CodeInput fields.

9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
CVE-2026-9198

IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a critical vulnerability that allows unauthenticated attackers to obtain SUPERUSER tokens and execute arbitrary code remotely, resulting in full remote code execution on default deployments.

9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
CVE-2026-9202

IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a vulnerability that allows unauthenticated attackers to create unlimited active user accounts when NEW_USER_IS_ACTIVE=true, bypass AUTO_LOGIN, and access remote code execution endpoints.

9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-306 - Missing Authentication for Critical Function
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
CVE-2026-14499

IBM Langflow OSS versions 1.0.0 through 1.10.1 have a vulnerability in the Python Interpreter component that permits authenticated users to execute arbitrary commands with elevated privileges due to improper input validation.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Langflow
 vers:unknown/*
vers:unknown/*
IBM / Langflow Desktop
 vers:unknown/*
vers:unknown/*
IBM / Langflow OSS
 vers:unknown/*
References
URL Category
https://www.ibm.com/support/pages/node/7278920 external
https://www.ibm.com/support/pages/node/7278921 external
https://www.ibm.com/support/pages/node/7278922 external
https://www.ibm.com/support/pages/node/7278923 external
https://www.ibm.com/support/pages/node/7278924 external
https://www.ibm.com/support/pages/node/7278925 external
https://www.ibm.com/support/pages/node/7278926 external
https://www.ibm.com/support/pages/node/7278927 external
https://www.ibm.com/support/pages/node/7278929 external
https://www.ibm.com/support/pages/node/7278930 external
https://www.ibm.com/support/pages/node/7278931 external
https://www.ibm.com/support/pages/node/7278932 external
https://www.ibm.com/support/pages/node/7278933 external
https://www.ibm.com/support/pages/node/7278934 external
https://www.ibm.com/support/pages/node/7279987 external
https://www.ibm.com/support/pages/node/7279988 external
https://www.ibm.com/support/pages/node/7279989 external
https://www.ibm.com/support/pages/node/7279990 external
https://www.ibm.com/support/pages/node/7279991 external
https://www.ibm.com/support/pages/node/7279993 external
https://www.ibm.com/support/pages/node/7279994 external
https://www.ibm.com/support/pages/node/7279995 external
https://www.ibm.com/support/pages/node/7279996 external
https://www.ibm.com/support/pages/node/7279997 external
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-… self
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      },
      {
        "category": "description",
        "text": "IBM heeft meerdere kwetsbaarheden verholpen in IBM Langflow OSS versies 1.0.0 tot en met 1.10.0.",
        "title": "Feiten"
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      {
        "category": "description",
        "text": "De kwetsbaarheden in IBM Langflow OSS betreffen onder andere:\n- het uitvoeren van willekeurige bestandswijzigingen door geauthenticeerde gebruikers via speciaal opgemaakte Content-Disposition headers\n- server-side request forgery (SSRF) door onveilige standaardconfiguraties\n- remote code execution (RCE) door onvoldoende validatie van MCP serverconfiguratiebestanden\n- geauthenticeerde gebruikers kunnen bestanden lezen, waaronder de JWT signing key, wat het mogelijk maakt authenticatietokens te vervalsen\n- een kwetsbaarheid in de apply_tweaks() functie die parameteroverriding via de API toestaat en unsafe deserialisatie in de AsyncDiskCache class die RCE mogelijk maakt\n- het POST /api/v1/validate/code endpoint voert gebruikersgeleverde Python code uit zonder sandboxing, wat volledige servercontrole kan geven\n- de webhook authenticatiemechanismen kunnen worden omzeild als de WEBHOOK_AUTH_ENABLE parameter op False staat, waardoor ongeauthenticeerde gebruikers flows kunnen uitvoeren\n- ook is er een privilege escalation mogelijk tot superuser via het misbruiken van Langflow service permissies\n- een path traversal kwetsbaarheid in de APIRequest component maakt het mogelijk om bestanden op ongewenste locaties te schrijven\n- het /api/v1/login/auto_login endpoint kan bij ingeschakelde AUTO_LOGIN feature langelevensduur superuser tokens uitgeven zonder authenticatie, mede verergerd door permissieve CORS instellingen\n- de Policies component bevat een code injection kwetsbaarheid in de ToolGuard integratie, waarbij geauthenticeerde gebruikers met flow creatie rechten arbitrary Python code kunnen uitvoeren\n- ongeauthenticeerde aanvallers kunnen superuser tokens verkrijgen en daarmee volledige remote code execution uitvoeren op standaardinstallaties. Tevens kunnen zij een onbeperkt aantal actieve gebruikersaccounts aanmaken als de NEW_USER_IS_ACTIVE parameter op true staat, waarmee ze de AUTO_LOGIN restricties kunnen omzeilen en toegang krijgen tot remote code execution endpoints.",
        "title": "Interpretaties"
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        "title": "CWE-20"
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        "title": "CWE-200"
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        "title": "CWE-265"
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        "category": "general",
        "text": "Permission Issues",
        "title": "CWE-275"
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      {
        "category": "general",
        "text": "Improper Authentication",
        "title": "CWE-287"
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      {
        "category": "general",
        "text": "Missing Authentication for Critical Function",
        "title": "CWE-306"
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        "category": "general",
        "text": "Deserialization of Untrusted Data",
        "title": "CWE-502"
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    "title": "Kwetsbaarheden verholpen in IBM Langflow OSS",
    "tracking": {
      "current_release_date": "2026-07-21T09:42:05.796837Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
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      "initial_release_date": "2026-07-21T09:42:05.796837Z",
      "revision_history": [
        {
          "date": "2026-07-21T09:42:05.796837Z",
          "number": "1.0.0",
          "summary": "Initiele versie"
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              {
                "category": "product_version_range",
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                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-1"
                }
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            "category": "product_name",
            "name": "Langflow"
          },
          {
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              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
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            "name": "Langflow Desktop"
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            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-3"
                }
              }
            ],
            "category": "product_name",
            "name": "Langflow OSS"
          }
        ],
        "category": "vendor",
        "name": "IBM"
      }
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-7667",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
          "title": "CWE-22"
        },
        {
          "category": "description",
          "text": "IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a vulnerability allowing authenticated attackers to write arbitrary files to any path accessible by the Langflow process via a malicious flow with a crafted Content-Disposition header.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-7667 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-7667.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-7667"
    },
    {
      "cve": "CVE-2026-7754",
      "cwe": {
        "id": "CWE-918",
        "name": "Server-Side Request Forgery (SSRF)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Server-Side Request Forgery (SSRF)",
          "title": "CWE-918"
        },
        {
          "category": "description",
          "text": "IBM Langflow OSS versions 1.0.0 through 1.10.0, including Langflow 1.9.0, contain a server-side request forgery (SSRF) vulnerability due to insecure default configurations and incomplete SSRF protection enforcement.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-7754 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-7754.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-7754"
    },
    {
      "cve": "CVE-2026-7755",
      "notes": [
        {
          "category": "description",
          "text": "IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a remote code execution vulnerability caused by incomplete validation enforcement on MCP server configuration files.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-7755 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-7755.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-7755"
    },
    {
      "cve": "CVE-2026-7872",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
          "title": "CWE-22"
        },
        {
          "category": "description",
          "text": "IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a vulnerability allowing authenticated attackers to read arbitrary files, including the JWT signing key, enabling token forgery for any user.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-7872 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-7872.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-7872"
    },
    {
      "cve": "CVE-2026-8056",
      "cwe": {
        "id": "CWE-94",
        "name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Control of Generation of Code (\u0027Code Injection\u0027)",
          "title": "CWE-94"
        },
        {
          "category": "description",
          "text": "IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a critical security flaw in the apply_tweaks() function that permits authenticated users to override component parameters at runtime via the API due to improper parameter filtering.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-8056 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-8056.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-8056"
    },
    {
      "cve": "CVE-2026-8476",
      "cwe": {
        "id": "CWE-502",
        "name": "Deserialization of Untrusted Data"
      },
      "notes": [
        {
          "category": "other",
          "text": "Deserialization of Untrusted Data",
          "title": "CWE-502"
        },
        {
          "category": "description",
          "text": "IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the AsyncDiskCache class due to unsafe deserialization, enabling attackers with file system or API access to execute arbitrary code.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-8476 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-8476.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-8476"
    },
    {
      "cve": "CVE-2026-8481",
      "cwe": {
        "id": "CWE-94",
        "name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Control of Generation of Code (\u0027Code Injection\u0027)",
          "title": "CWE-94"
        },
        {
          "category": "description",
          "text": "IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the POST /api/v1/validate/code endpoint that allows authenticated users to execute arbitrary system commands with full server privileges.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-8481 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-8481.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-8481"
    },
    {
      "cve": "CVE-2026-8505",
      "cwe": {
        "id": "CWE-306",
        "name": "Missing Authentication for Critical Function"
      },
      "notes": [
        {
          "category": "other",
          "text": "Missing Authentication for Critical Function",
          "title": "CWE-306"
        },
        {
          "category": "description",
          "text": "IBM Langflow OSS versions 1.0.0 to 1.10.0 have a webhook authentication vulnerability allowing unauthenticated users to bypass API key validation and execute any flow when WEBHOOK_AUTH_ENABLE is set to False, risking remote code execution.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-8505 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-8505.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-8505"
    },
    {
      "cve": "CVE-2026-8635",
      "cwe": {
        "id": "CWE-94",
        "name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Control of Generation of Code (\u0027Code Injection\u0027)",
          "title": "CWE-94"
        },
        {
          "category": "description",
          "text": "IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a critical vulnerability allowing authenticated users to escalate privileges to superuser and execute arbitrary system commands via Langflow service permissions.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-8635 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-8635.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-8635"
    },
    {
      "cve": "CVE-2026-8859",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
          "title": "CWE-22"
        },
        {
          "category": "description",
          "text": "IBM Langflow versions 1.0.0 through 1.10.0 have a path traversal vulnerability in the APIRequest component\u0027s \u0027Save to File\u0027 feature, allowing attackers to write arbitrary files via unsanitized filenames from HTTP response headers.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-8859 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-8859.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-8859"
    },
    {
      "cve": "CVE-2026-9103",
      "cwe": {
        "id": "CWE-306",
        "name": "Missing Authentication for Critical Function"
      },
      "notes": [
        {
          "category": "other",
          "text": "Missing Authentication for Critical Function",
          "title": "CWE-306"
        },
        {
          "category": "description",
          "text": "IBM Langflow OSS versions 1.0.0 to 1.10.0 contain a critical vulnerability in the /api/v1/login/auto_login endpoint that issues long-lived superuser tokens without authentication when AUTO_LOGIN is enabled, with permissive CORS settings increasing token exposure risk.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-9103 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-9103.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-9103"
    },
    {
      "cve": "CVE-2026-9135",
      "cwe": {
        "id": "CWE-94",
        "name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Control of Generation of Code (\u0027Code Injection\u0027)",
          "title": "CWE-94"
        },
        {
          "category": "description",
          "text": "IBM Langflow OSS versions up to 1.9.2 have a code injection vulnerability in the Policies component\u0027s ToolGuard integration, allowing authenticated users with flow creation rights to execute arbitrary Python code via unvalidated dynamic CodeInput fields.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-9135 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-9135.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-9135"
    },
    {
      "cve": "CVE-2026-9198",
      "cwe": {
        "id": "CWE-94",
        "name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Control of Generation of Code (\u0027Code Injection\u0027)",
          "title": "CWE-94"
        },
        {
          "category": "description",
          "text": "IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a critical vulnerability that allows unauthenticated attackers to obtain SUPERUSER tokens and execute arbitrary code remotely, resulting in full remote code execution on default deployments.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-9198 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-9198.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-9198"
    },
    {
      "cve": "CVE-2026-9202",
      "cwe": {
        "id": "CWE-306",
        "name": "Missing Authentication for Critical Function"
      },
      "notes": [
        {
          "category": "other",
          "text": "Missing Authentication for Critical Function",
          "title": "CWE-306"
        },
        {
          "category": "description",
          "text": "IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a vulnerability that allows unauthenticated attackers to create unlimited active user accounts when NEW_USER_IS_ACTIVE=true, bypass AUTO_LOGIN, and access remote code execution endpoints.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-9202 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-9202.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-9202"
    },
    {
      "cve": "CVE-2026-14499",
      "cwe": {
        "id": "CWE-78",
        "name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
          "title": "CWE-78"
        },
        {
          "category": "description",
          "text": "IBM Langflow OSS versions 1.0.0 through 1.10.1 have a vulnerability in the Python Interpreter component that permits authenticated users to execute arbitrary commands with elevated privileges due to improper input validation.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-14499 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-14499.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3"
          ]
        }
      ],
      "title": "CVE-2026-14499"
    }
  ]
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.