Common Weakness Enumeration

CWE-94

Allowed-with-Review

Improper Control of Generation of Code ('Code Injection')

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

8337 vulnerabilities reference this CWE, most recent first.

GHSA-V4PG-HHQM-JPJH

Vulnerability from github – Published: 2022-05-17 05:45 – Updated: 2022-05-17 05:45
VLAI
Details

goform/websXMLAdminRequestCgi.cgi in Cisco Unified Videoconferencing (UVC) System 5110 and 5115, and possibly Unified Videoconferencing System 3545 and 5230, Unified Videoconferencing 3527 Primary Rate Interface (PRI) Gateway, Unified Videoconferencing 3522 Basic Rate Interfaces (BRI) Gateway, and Unified Videoconferencing 3515 Multipoint Control Unit (MCU), allows remote authenticated administrators to execute arbitrary commands via the username field, related to a "shell command injection vulnerability," aka Bug ID CSCti54059.

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{
  "affected": [],
  "aliases": [
    "CVE-2010-3037"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2010-11-22T20:00:00Z",
    "severity": "HIGH"
  },
  "details": "goform/websXMLAdminRequestCgi.cgi in Cisco Unified Videoconferencing (UVC) System 5110 and 5115, and possibly Unified Videoconferencing System 3545 and 5230, Unified Videoconferencing 3527 Primary Rate Interface (PRI) Gateway, Unified Videoconferencing 3522 Basic Rate Interfaces (BRI) Gateway, and Unified Videoconferencing 3515 Multipoint Control Unit (MCU), allows remote authenticated administrators to execute arbitrary commands via the username field, related to a \"shell command injection vulnerability,\" aka Bug ID CSCti54059.",
  "id": "GHSA-v4pg-hhqm-jpjh",
  "modified": "2022-05-17T05:45:28Z",
  "published": "2022-05-17T05:45:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2010-3037"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2010/Nov/167"
    },
    {
      "type": "WEB",
      "url": "http://www.cisco.com/en/US/products/products_security_response09186a0080b56d0d.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/44922"
    },
    {
      "type": "WEB",
      "url": "http://www.securitytracker.com/id?1024753"
    },
    {
      "type": "WEB",
      "url": "http://www.trustmatta.com/advisories/MATTA-2010-001.txt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-V4V5-38HC-7H56

Vulnerability from github – Published: 2023-07-12 09:30 – Updated: 2024-04-04 06:02
VLAI
Details

A CWE-94: Improper Control of Generation of Code ('Code Injection') vulnerability exists that could cause remote code execution when an admin user on DCE tampers with backups which are then manually restored.

Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2023-37199"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-07-12T08:15:10Z",
    "severity": "HIGH"
  },
  "details": "\nA CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027) vulnerability exists that\ncould cause remote code execution when an admin user on DCE tampers with backups which\nare then manually restored. \n\n\n",
  "id": "GHSA-v4v5-38hc-7h56",
  "modified": "2024-04-04T06:02:17Z",
  "published": "2023-07-12T09:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-37199"
    },
    {
      "type": "WEB",
      "url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2023-192-01\u0026p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=SEVD-2023-192-01.pdf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-V4X4-98CG-WR4G

Vulnerability from github – Published: 2018-12-26 17:45 – Updated: 2024-09-13 20:11
VLAI
Summary
Code injection in Danijar Definitions
Details

There is a vulnerability in load() method in definitions/parser.py in the Danijar Hafner definitions package for Python. It can execute arbitrary python commands resulting in command execution.

Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "definitions"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-20325"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:56:38Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "There is a vulnerability in `load()` method in definitions/parser.py in the Danijar Hafner definitions package for Python. It can execute arbitrary python commands resulting in command execution.",
  "id": "GHSA-v4x4-98cg-wr4g",
  "modified": "2024-09-13T20:11:10Z",
  "published": "2018-12-26T17:45:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20325"
    },
    {
      "type": "WEB",
      "url": "https://github.com/danijar/definitions/issues/14"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-v4x4-98cg-wr4g"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/danijar/definitions"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/definitions/PYSEC-2018-82.yaml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Code injection in Danijar Definitions"
}

GHSA-V527-6H5R-CFG8

Vulnerability from github – Published: 2022-05-24 16:52 – Updated: 2024-02-12 11:42
VLAI
Summary
Magento 2 Community Edition Unsafe File Upload
Details

A security bypass exists in Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2 that could be abused to execute arbitrary PHP code. An authenticated user can bypass security protections that prevent arbitrary PHP script upload via form data injection.

Severity
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "magento/community-edition"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.1.0"
            },
            {
              "fixed": "2.1.18"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "magento/community-edition"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.2.0"
            },
            {
              "fixed": "2.2.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "magento/community-edition"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.3.0"
            },
            {
              "fixed": "2.3.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2019-7871"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-07-17T21:36:44Z",
    "nvd_published_at": "2019-08-02T22:15:00Z",
    "severity": "HIGH"
  },
  "details": "A security bypass exists in Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2 that could be abused to execute arbitrary PHP code. An authenticated user can bypass security protections that prevent arbitrary PHP script upload via form data injection.",
  "id": "GHSA-v527-6h5r-cfg8",
  "modified": "2024-02-12T11:42:34Z",
  "published": "2022-05-24T16:52:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-7871"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/magento/product-community-edition/CVE-2019-7871.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/magento/magento2"
    },
    {
      "type": "WEB",
      "url": "https://magento.com/security/patches/magento-2.3.2-2.2.9-and-2.1.18-security-update-13"
    },
    {
      "type": "WEB",
      "url": "https://web.archive.org/web/20211206084839/https://magento.com/security/patches/magento-2.3.2-2.2.9-and-2.1.18-security-update-13"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Magento 2 Community Edition Unsafe File Upload"
}

GHSA-V54X-QQ77-866F

Vulnerability from github – Published: 2022-05-24 17:09 – Updated: 2022-05-24 17:09
VLAI
Details

Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data, leading to remote code execution.

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{
  "affected": [],
  "aliases": [
    "CVE-2020-8518"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-02-17T15:15:00Z",
    "severity": "HIGH"
  },
  "details": "Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data, leading to remote code execution.",
  "id": "GHSA-v54x-qq77-866f",
  "modified": "2022-05-24T17:09:10Z",
  "published": "2022-05-24T17:09:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8518"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2020/04/msg00008.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2PRPIFQDGYPQ3F2TF2ETPIL7IYNSVVZQ"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DKTNYDBDVJNMVC7QPXQI7CMPLX3USZ2T"
    },
    {
      "type": "WEB",
      "url": "https://lists.horde.org/archives/announce/2020/001285.html"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/156872/Horde-5.2.22-CSV-Import-Code-Execution.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-V556-C5QJ-PRP8

Vulnerability from github – Published: 2022-05-17 01:03 – Updated: 2022-05-17 01:03
VLAI
Details

Adobe Flash Media Server (FMS) 3.0.x before 3.0.7, 3.5.x before 3.5.5, and 4.0.x before 4.0.1 allows attackers to execute arbitrary code via unspecified vectors, related to a "segmentation fault vulnerability."

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{
  "affected": [],
  "aliases": [
    "CVE-2010-3635"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2010-11-10T03:00:00Z",
    "severity": "HIGH"
  },
  "details": "Adobe Flash Media Server (FMS) 3.0.x before 3.0.7, 3.5.x before 3.5.5, and 4.0.x before 4.0.1 allows attackers to execute arbitrary code via unspecified vectors, related to a \"segmentation fault vulnerability.\"",
  "id": "GHSA-v556-c5qj-prp8",
  "modified": "2022-05-17T01:03:58Z",
  "published": "2022-05-17T01:03:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2010-3635"
    },
    {
      "type": "WEB",
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11333"
    },
    {
      "type": "WEB",
      "url": "http://www.adobe.com/support/security/bulletins/apsb10-27.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/44753"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-V574-82CF-H53M

Vulnerability from github – Published: 2022-05-14 02:30 – Updated: 2022-05-14 02:30
VLAI
Details

Microsoft Word 2007 SP3, Word Viewer, and Office Compatibility Pack SP3 allow remote attackers to execute arbitrary code via a crafted Office document, aka "Microsoft Office Double Delete Remote Code Execution Vulnerability."

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{
  "affected": [],
  "aliases": [
    "CVE-2014-6333"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2014-11-11T22:55:00Z",
    "severity": "HIGH"
  },
  "details": "Microsoft Word 2007 SP3, Word Viewer, and Office Compatibility Pack SP3 allow remote attackers to execute arbitrary code via a crafted Office document, aka \"Microsoft Office Double Delete Remote Code Execution Vulnerability.\"",
  "id": "GHSA-v574-82cf-h53m",
  "modified": "2022-05-14T02:30:28Z",
  "published": "2022-05-14T02:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2014-6333"
    },
    {
      "type": "WEB",
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-069"
    },
    {
      "type": "WEB",
      "url": "http://secunia.com/advisories/59867"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/70961"
    },
    {
      "type": "WEB",
      "url": "http://www.securitytracker.com/id/1031189"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-V57G-J4XW-H383

Vulnerability from github – Published: 2022-05-17 04:30 – Updated: 2022-05-17 04:30
VLAI
Details

Eval injection vulnerability in luci 0.26.0 allows remote authenticated users with certain permissions to execute arbitrary Python code via a crafted cluster configuration.

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{
  "affected": [],
  "aliases": [
    "CVE-2014-3593"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2014-10-15T14:55:00Z",
    "severity": "MODERATE"
  },
  "details": "Eval injection vulnerability in luci 0.26.0 allows remote authenticated users with certain permissions to execute arbitrary Python code via a crafted cluster configuration.",
  "id": "GHSA-v57g-j4xw-h383",
  "modified": "2022-05-17T04:30:51Z",
  "published": "2022-05-17T04:30:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2014-3593"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2014:1390"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2014-3593"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=989005"
    },
    {
      "type": "WEB",
      "url": "http://rhn.redhat.com/errata/RHSA-2014-1390.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-V5C9-MMW9-829Q

Vulnerability from github – Published: 2022-05-14 02:39 – Updated: 2022-06-17 21:23
VLAI
Summary
PHPMailer susceptible to arbitrary code execution
Details

html2text.php in Chuggnutt HTML to Text Converter, as used in PHPMailer before 5.2.10, RoundCube Webmail (roundcubemail) 0.2-1.alpha and 0.2-3.beta, Mahara, and AtMail Open 1.03, allows remote attackers to execute arbitrary code via crafted input that is processed by the preg_replace function with the eval switch.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "phpmailer/phpmailer"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.2.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2008-5619"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-06-17T21:23:30Z",
    "nvd_published_at": "2008-12-17T02:30:00Z",
    "severity": "HIGH"
  },
  "details": "html2text.php in Chuggnutt HTML to Text Converter, as used in PHPMailer before 5.2.10, RoundCube Webmail (roundcubemail) 0.2-1.alpha and 0.2-3.beta, Mahara, and AtMail Open 1.03, allows remote attackers to execute arbitrary code via crafted input that is processed by the preg_replace function with the eval switch.",
  "id": "GHSA-v5c9-mmw9-829q",
  "modified": "2022-06-17T21:23:30Z",
  "published": "2022-05-14T02:39:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2008-5619"
    },
    {
      "type": "WEB",
      "url": "https://github.com/PHPMailer/PHPMailer/commit/8beacc646acb67c995aea10ac5585970efc7355a"
    },
    {
      "type": "WEB",
      "url": "https://github.com/PHPMailer/PHPMailer"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/7549"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/7553"
    },
    {
      "type": "WEB",
      "url": "https://www.redhat.com/archives/fedora-package-announce/2008-December/msg00783.html"
    },
    {
      "type": "WEB",
      "url": "https://www.redhat.com/archives/fedora-package-announce/2008-December/msg00802.html"
    },
    {
      "type": "WEB",
      "url": "http://mahara.org/interaction/forum/topic.php?id=533"
    },
    {
      "type": "WEB",
      "url": "http://osvdb.org/53893"
    },
    {
      "type": "WEB",
      "url": "http://sourceforge.net/forum/forum.php?forum_id=898542"
    },
    {
      "type": "WEB",
      "url": "http://trac.roundcube.net/changeset/2148"
    },
    {
      "type": "WEB",
      "url": "http://trac.roundcube.net/ticket/1485618"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2008/12/12/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "PHPMailer susceptible to arbitrary code execution"
}

GHSA-V5FF-9Q35-Q26F

Vulnerability from github – Published: 2026-06-16 17:35 – Updated: 2026-07-20 13:42
VLAI
Summary
Langflow: Unauthenticated RCE in Shareable Playgrounds
Details

Summary

The "Shareable Playground" (or "Public Flows" in code) contains a critical RCE vulnerability. Simply sharing a flow exposes the deployment to RCE risk by authenticated users.

Tested on commit 2d67402b1dbaefcbce85a244d4a6cd5e4bda1cfe

Details

Shareable Playground feature works by enabling the execution of workflows by unauthenticated users, by accessing a link. Specifically, it enables the route /api/v1/build_public_tmp to execute any public flow, given a public flow ID. When the route executes the flow, it allows for providing arbitrary custom Python code as the nodes code, inside the JSON payload!

The vulnerable field is data.nodes[X].data.node.template.code.value. See PoC for an example.

PoC

Reproduction: 1. Create a new flow and add a Chat Input node to it 2. Share the flow ("Shareable Playground") 3. Access the public link with the browser developers tools open and execute the flow. 4. Find the /api/v1/build_public_tmp route and copy as cURL 5. Edit the data.nodes[X].data.node.template.code.value JSON field with any python code and run the cURL command.

Example PoC (replace flow ID with the correct one), and download test_with_python.json:

curl 'http://localhost:7860/api/v1/build_public_tmp/<flow-id>/flow?start_component_id=ChatInput-syEJp&log_builds=false&event_delivery=streaming' \
  -H 'Content-Type: application/json' \
  -b 'client_id=anything' \
  --data-raw "$(cat test_with_python.json)"

Search for touch /tmp/pwned in the test_with_python.json and edit for any other code.

The stacktrace for the code executed is:

...
  File "/Users/ori/Work/research/langchain/langflow/src/backend/base/langflow/api/build.py", line 495, in generate_flow_events
    ids, vertices_to_run, graph = await build_graph_and_get_order()
  File "/Users/ori/Work/research/langchain/langflow/src/backend/base/langflow/api/build.py", line 234, in build_graph_and_get_order
    graph = await create_graph(fresh_session, flow_id_str, flow_name)
  File "/Users/ori/Work/research/langchain/langflow/src/backend/base/langflow/api/build.py", line 298, in create_graph
    return await build_graph_from_data(
  File "/Users/ori/Work/research/langchain/langflow/src/backend/base/langflow/api/utils/core.py", line 192, in build_graph_from_data
    graph = Graph.from_payload(payload, str_flow_id, flow_name, kwargs.get("user_id"))
  File "/Users/ori/Work/research/langchain/langflow/src/lfx/src/lfx/graph/graph/base.py", line 1153, in from_payload
    graph.add_nodes_and_edges(vertices, edges)
  File "/Users/ori/Work/research/langchain/langflow/src/lfx/src/lfx/graph/graph/base.py", line 270, in add_nodes_and_edges
    self.initialize()
  File "/Users/ori/Work/research/langchain/langflow/src/lfx/src/lfx/graph/graph/base.py", line 512, in initialize
    self._build_graph()
  File "/Users/ori/Work/research/langchain/langflow/src/lfx/src/lfx/graph/graph/base.py", line 1305, in _build_graph
    self._instantiate_components_in_vertices()
  File "/Users/ori/Work/research/langchain/langflow/src/lfx/src/lfx/graph/graph/base.py", line 1347, in _instantiate_components_in_vertices
    vertex.instantiate_component(self.user_id)
  File "/Users/ori/Work/research/langchain/langflow/src/lfx/src/lfx/graph/vertex/base.py", line 382, in instantiate_component
    self.custom_component, _ = initialize.loading.instantiate_class(
  File "/Users/ori/Work/research/langchain/langflow/src/lfx/src/lfx/interface/initialize/loading.py", line 45, in instantiate_class
    custom_component: CustomComponent | Component = class_object(
  File "<string>", line 59, in __init__

Impact

Unauthenticated RCE on any deployment with a shareable playground.

Ori Lahav Security Researcher @ Rubrik Inc.

Severity
9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.9.1"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "langflow"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.9.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-48519"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-16T17:35:32Z",
    "nvd_published_at": "2026-06-23T17:17:01Z",
    "severity": "CRITICAL"
  },
  "details": "### Summary\nThe \"Shareable Playground\" (or \"Public Flows\" in code) contains a critical RCE vulnerability.\nSimply sharing a flow exposes the deployment to RCE risk by authenticated users.\n\nTested on commit 2d67402b1dbaefcbce85a244d4a6cd5e4bda1cfe\n\n### Details\nShareable Playground feature works by enabling the execution of workflows by unauthenticated users, by accessing a link.\nSpecifically, it enables the route `/api/v1/build_public_tmp` to execute any public flow, given a public flow ID.\nWhen the route executes the flow, it allows for providing arbitrary custom Python code as the nodes code, inside the JSON payload!\n\nThe vulnerable field is data.nodes[X].data.node.template.code.value. See PoC for an example.\n\n### PoC\nReproduction:\n1. Create a new flow and add a Chat Input node to it\n2. Share the flow (\"Shareable Playground\")\n3. Access the public link with the browser developers tools open and execute the flow.\n4. Find the `/api/v1/build_public_tmp` route and copy as cURL\n5. Edit the `data.nodes[X].data.node.template.code.value` JSON field with any python code and run the cURL command.\n\nExample PoC (replace flow ID with the correct one), and download [test_with_python.json](https://github.com/user-attachments/files/25159927/test_with_python.json):\n```bash\ncurl \u0027http://localhost:7860/api/v1/build_public_tmp/\u003cflow-id\u003e/flow?start_component_id=ChatInput-syEJp\u0026log_builds=false\u0026event_delivery=streaming\u0027 \\\n  -H \u0027Content-Type: application/json\u0027 \\\n  -b \u0027client_id=anything\u0027 \\\n  --data-raw \"$(cat test_with_python.json)\"\n```\nSearch for `touch /tmp/pwned` in the `test_with_python.json` and edit for any other code.\n\n\n\nThe stacktrace for the code executed is:\n```\n...\n  File \"/Users/ori/Work/research/langchain/langflow/src/backend/base/langflow/api/build.py\", line 495, in generate_flow_events\n    ids, vertices_to_run, graph = await build_graph_and_get_order()\n  File \"/Users/ori/Work/research/langchain/langflow/src/backend/base/langflow/api/build.py\", line 234, in build_graph_and_get_order\n    graph = await create_graph(fresh_session, flow_id_str, flow_name)\n  File \"/Users/ori/Work/research/langchain/langflow/src/backend/base/langflow/api/build.py\", line 298, in create_graph\n    return await build_graph_from_data(\n  File \"/Users/ori/Work/research/langchain/langflow/src/backend/base/langflow/api/utils/core.py\", line 192, in build_graph_from_data\n    graph = Graph.from_payload(payload, str_flow_id, flow_name, kwargs.get(\"user_id\"))\n  File \"/Users/ori/Work/research/langchain/langflow/src/lfx/src/lfx/graph/graph/base.py\", line 1153, in from_payload\n    graph.add_nodes_and_edges(vertices, edges)\n  File \"/Users/ori/Work/research/langchain/langflow/src/lfx/src/lfx/graph/graph/base.py\", line 270, in add_nodes_and_edges\n    self.initialize()\n  File \"/Users/ori/Work/research/langchain/langflow/src/lfx/src/lfx/graph/graph/base.py\", line 512, in initialize\n    self._build_graph()\n  File \"/Users/ori/Work/research/langchain/langflow/src/lfx/src/lfx/graph/graph/base.py\", line 1305, in _build_graph\n    self._instantiate_components_in_vertices()\n  File \"/Users/ori/Work/research/langchain/langflow/src/lfx/src/lfx/graph/graph/base.py\", line 1347, in _instantiate_components_in_vertices\n    vertex.instantiate_component(self.user_id)\n  File \"/Users/ori/Work/research/langchain/langflow/src/lfx/src/lfx/graph/vertex/base.py\", line 382, in instantiate_component\n    self.custom_component, _ = initialize.loading.instantiate_class(\n  File \"/Users/ori/Work/research/langchain/langflow/src/lfx/src/lfx/interface/initialize/loading.py\", line 45, in instantiate_class\n    custom_component: CustomComponent | Component = class_object(\n  File \"\u003cstring\u003e\", line 59, in __init__\n```\n\n### Impact\nUnauthenticated RCE on any deployment with a shareable playground.\n\n\n\nOri Lahav\nSecurity Researcher @ Rubrik Inc.",
  "id": "GHSA-v5ff-9q35-q26f",
  "modified": "2026-07-20T13:42:11Z",
  "published": "2026-06-16T17:35:32Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/langflow-ai/langflow/security/advisories/GHSA-v5ff-9q35-q26f"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48519"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/langflow-ai/langflow"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/langflow/PYSEC-2026-243.yaml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Langflow: Unauthenticated RCE in Shareable Playgrounds"
}
Mitigation
Architecture and Design

Strategy: Refactoring

Refactor your program so that you do not have to dynamically generate code.

Mitigation
Architecture and Design
  • Run your code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which code can be executed by your product.
  • Examples include the Unix chroot jail and AppArmor. In general, managed code may provide some protection.
  • This may not be a feasible solution, and it only limits the impact to the operating system; the rest of your application may still be subject to compromise.
  • Be careful to avoid CWE-243 and other weaknesses related to jails.
Mitigation MIT-5
Implementation

Strategy: Input Validation

  • Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
  • To reduce the likelihood of code injection, use stringent allowlists that limit which constructs are allowed. If you are dynamically constructing code that invokes a function, then verifying that the input is alphanumeric might be insufficient. An attacker might still be able to reference a dangerous function that you did not intend to allow, such as system(), exec(), or exit().
Mitigation
Testing

Use dynamic tools and techniques that interact with the product using large test suites with many diverse inputs, such as fuzz testing (fuzzing), robustness testing, and fault injection. The product's operation may slow down, but it should not become unstable, crash, or generate incorrect results.

Mitigation MIT-32
Operation

Strategy: Compilation or Build Hardening

Run the code in an environment that performs automatic taint propagation and prevents any command execution that uses tainted variables, such as Perl's "-T" switch. This will force the program to perform validation steps that remove the taint, although you must be careful to correctly validate your inputs so that you do not accidentally mark dangerous inputs as untainted (see CWE-183 and CWE-184).

Mitigation MIT-32
Operation

Strategy: Environment Hardening

Run the code in an environment that performs automatic taint propagation and prevents any command execution that uses tainted variables, such as Perl's "-T" switch. This will force the program to perform validation steps that remove the taint, although you must be careful to correctly validate your inputs so that you do not accidentally mark dangerous inputs as untainted (see CWE-183 and CWE-184).

Mitigation
Implementation

For Python programs, it is frequently encouraged to use the ast.literal_eval() function instead of eval, since it is intentionally designed to avoid executing code. However, an adversary could still cause excessive memory or stack consumption via deeply nested structures [REF-1372], so the python documentation discourages use of ast.literal_eval() on untrusted data [REF-1373].

CAPEC-242: Code Injection

An adversary exploits a weakness in input validation on the target to inject new code into that which is currently executing. This differs from code inclusion in that code inclusion involves the addition or replacement of a reference to a code file, which is subsequently loaded by the target and used as part of the code of some application.

CAPEC-35: Leverage Executable Code in Non-Executable Files

An attack of this type exploits a system's trust in configuration and resource files. When the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high.

CAPEC-77: Manipulating User-Controlled Variables

This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An adversary can override variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the adversary can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.

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