Common Weakness Enumeration

CWE-201

Allowed

Insertion of Sensitive Information Into Sent Data

Abstraction: Base · Status: Draft

The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.

673 vulnerabilities reference this CWE, most recent first.

GHSA-CJJR-H37F-5XW7

Vulnerability from github – Published: 2023-07-26 09:30 – Updated: 2024-04-04 06:21
VLAI
Details

An issue has been discovered in GitLab DAST scanner affecting all versions starting from 3.0.29 before 4.0.5, in which the DAST scanner leak cross site cookies on redirect during authorization.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-1401"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200",
      "CWE-201",
      "CWE-668"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-07-26T07:15:09Z",
    "severity": "MODERATE"
  },
  "details": "An issue has been discovered in GitLab DAST scanner affecting all versions starting from 3.0.29 before 4.0.5, in which the DAST scanner leak cross site cookies on redirect during authorization.",
  "id": "GHSA-cjjr-h37f-5xw7",
  "modified": "2024-04-04T06:21:41Z",
  "published": "2023-07-26T09:30:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-1401"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/1889255"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/396533"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-CMP6-M4WJ-Q63Q

Vulnerability from github – Published: 2025-12-05 18:54 – Updated: 2025-12-05 18:54
VLAI
Summary
yawkat LZ4 Java has a possible information leak in Java safe decompressor
Details

Summary

Insufficient clearing of the output buffer in Java-based decompressor implementations in lz4-java 1.10.0 and earlier allows remote attackers to read previous buffer contents via crafted compressed input. In applications where the output buffer is reused without being cleared, this may lead to disclosure of sensitive data.

JNI-based implementations are not affected.

Details

During the decompression process, the lz4 algorithm may have to repeat data that was previously decompressed in the same input frame. In the Java implementation, this is implemented by copy operations within the output buffer.

With a crafted input, an attacker may induce the Java implementation to copy from a region in the output buffer that does not contain decompressed data yet. If that region contains sensitive information because the output buffer was not cleared prior to decompression, that data will then be copied to the decompressed output.

  • LZ4Factory.nativeInstance().safeDecompressor() is not affected.
  • LZ4Factory.nativeInstance().fastDecompressor() is affected because it actually uses safeInstance() since 1.8.1. In 1.8.0 and earlier versions, this implementation is instead vulnerable to the more severe CVE‐2025‐12183, so downgrading is not a solution.
  • Both decompressors of LZ4Factory.safeInstance(), LZ4Factory.unsafeInstance() and LZ4Factory.fastestJavaInstance() are affected.
  • LZ4Factory.fastestInstance() uses the nativeInstance or fastestJavaInstance depending on platform. LZ4Factory.fastestInstance().fastDecompressor() is always affected, while LZ4Factory.fastestInstance().safeDecompressor() is affected only when JNI cannot be used (e.g. on unsupported platforms).

Independent of this vulnerability, it is recommended that users migrate from fastDecompressor to safeDecompressor, as the latter is more performant (despite the name).

The impact of this vulnerability depends on how user code interacts with the decompression API. Users that allocate a new destination buffer each time, or use only zeroed buffers, are not impacted. When the buffer is reused, however, the confidentiality impact can be severe. This vulnerability is marked as VC:H out of caution.

Mitigation

lz4-java 1.10.1 fixes this issue without requiring changes in user code.

If you cannot upgrade to 1.10.1, you can mitigate this vulnerability by zeroing the output buffer before passing it to the decompression function.

Relation to CVE‐2025‐12183

This CVE is a different attack than CVE‐2025‐12183, affecting different implementations with different impact. This new vulnerability was discovered by CodeIntelligence during research that followed up on CVE‐2025‐12183. Users are recommended to upgrade to 1.10.1 to fix both vulnerabilities.

Show details on source website

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.10.0"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "at.yawk.lz4:lz4-java"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.10.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.lz4:lz4-java"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "1.8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.lz4:lz4-pure-java"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "1.8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "net.jpountz.lz4:lz4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "1.8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-66566"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-201"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-12-05T18:54:55Z",
    "nvd_published_at": "2025-12-05T18:15:59Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n\nInsufficient clearing of the output buffer in Java-based decompressor implementations in lz4-java 1.10.0 and earlier allows remote attackers to read previous buffer contents via crafted compressed input. In applications where the output buffer is reused without being cleared, this may lead to disclosure of sensitive data.\n\nJNI-based implementations are *not* affected.\n\n### Details\n\nDuring the decompression process, the lz4 algorithm may have to repeat data that was previously decompressed in the same input frame. In the Java implementation, this is implemented by copy operations within the output buffer.\n\nWith a crafted input, an attacker may induce the Java implementation to copy from a region in the output buffer that does not contain decompressed data yet. If that region contains sensitive information because the output buffer was not cleared prior to decompression, that data will then be copied to the decompressed output.\n\n- `LZ4Factory.nativeInstance().safeDecompressor()` *is not* affected.\n- `LZ4Factory.nativeInstance().fastDecompressor()` *is* affected because it actually uses `safeInstance()` since 1.8.1. In 1.8.0 and earlier versions, this implementation is instead vulnerable to the more severe [CVE\u20102025\u201012183](https://sites.google.com/sonatype.com/vulnerabilities/cve-2025-12183), so downgrading is not a solution.\n- Both decompressors of `LZ4Factory.safeInstance()`, `LZ4Factory.unsafeInstance()` and `LZ4Factory.fastestJavaInstance()` are affected.\n- `LZ4Factory.fastestInstance()` uses the `nativeInstance` or `fastestJavaInstance` depending on platform. `LZ4Factory.fastestInstance().fastDecompressor()` is always affected, while `LZ4Factory.fastestInstance().safeDecompressor()` is affected only when JNI cannot be used (e.g. on unsupported platforms).\n\nIndependent of this vulnerability, it is recommended that users migrate from `fastDecompressor` to `safeDecompressor`, as the latter is more performant (despite the name).\n\nThe impact of this vulnerability depends on how user code interacts with the decompression API. Users that allocate a new destination buffer each time, or use only zeroed buffers, are not impacted. When the buffer is reused, however, the confidentiality impact can be severe. This vulnerability is marked as VC:H out of caution.\n\n### Mitigation\n\nlz4-java 1.10.1 fixes this issue without requiring changes in user code.\n\nIf you cannot upgrade to 1.10.1, you can mitigate this vulnerability by zeroing the output buffer before passing it to the decompression function.\n\n### Relation to CVE\u20102025\u201012183\n\nThis CVE is a different attack than [CVE\u20102025\u201012183](https://sites.google.com/sonatype.com/vulnerabilities/cve-2025-12183), affecting different implementations with different impact. This new vulnerability was discovered by [CodeIntelligence](https://www.code-intelligence.com/) during research that followed up on CVE\u20102025\u201012183. Users are recommended to upgrade to 1.10.1 to fix both vulnerabilities.",
  "id": "GHSA-cmp6-m4wj-q63q",
  "modified": "2025-12-05T18:54:55Z",
  "published": "2025-12-05T18:54:55Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/yawkat/lz4-java/security/advisories/GHSA-cmp6-m4wj-q63q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-66566"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yawkat/lz4-java/commit/33d180cb70c4d93c80fb0dc3ab3002f457e93840"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/yawkat/lz4-java"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "yawkat LZ4 Java has a possible information leak in Java safe decompressor"
}

GHSA-CPV9-P867-3VP3

Vulnerability from github – Published: 2026-04-08 09:31 – Updated: 2026-04-14 18:30
VLAI
Details

Insertion of Sensitive Information Into Sent Data vulnerability in AA Web Servant 12 Step Meeting List 12-step-meeting-list allows Retrieve Embedded Sensitive Data.This issue affects 12 Step Meeting List: from n/a through <= 3.19.9.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-39570"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-201"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-08T09:16:28Z",
    "severity": "MODERATE"
  },
  "details": "Insertion of Sensitive Information Into Sent Data vulnerability in AA Web Servant 12 Step Meeting List 12-step-meeting-list allows Retrieve Embedded Sensitive Data.This issue affects 12 Step Meeting List: from n/a through \u003c= 3.19.9.",
  "id": "GHSA-cpv9-p867-3vp3",
  "modified": "2026-04-14T18:30:29Z",
  "published": "2026-04-08T09:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39570"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/Wordpress/Plugin/12-step-meeting-list/vulnerability/wordpress-12-step-meeting-list-plugin-3-19-9-sensitive-data-exposure-vulnerability?_s_id=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-CR7V-VX2R-RR66

Vulnerability from github – Published: 2025-12-18 09:30 – Updated: 2026-01-20 15:32
VLAI
Details

Insertion of Sensitive Information Into Sent Data vulnerability in Syed Balkhi All In One SEO Pack all-in-one-seo-pack allows Retrieve Embedded Sensitive Data.This issue affects All In One SEO Pack: from n/a through <= 4.8.6.1.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-64295"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-201"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-18T08:16:13Z",
    "severity": "MODERATE"
  },
  "details": "Insertion of Sensitive Information Into Sent Data vulnerability in Syed Balkhi All In One SEO Pack all-in-one-seo-pack allows Retrieve Embedded Sensitive Data.This issue affects All In One SEO Pack: from n/a through \u003c= 4.8.6.1.",
  "id": "GHSA-cr7v-vx2r-rr66",
  "modified": "2026-01-20T15:32:31Z",
  "published": "2025-12-18T09:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-64295"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/Wordpress/Plugin/all-in-one-seo-pack/vulnerability/wordpress-all-in-one-seo-pack-plugin-4-8-6-1-sensitive-data-exposure-vulnerability?_s_id=cve"
    },
    {
      "type": "WEB",
      "url": "https://vdp.patchstack.com/database/Wordpress/Plugin/all-in-one-seo-pack/vulnerability/wordpress-all-in-one-seo-pack-plugin-4-8-6-1-sensitive-data-exposure-vulnerability?_s_id=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-CV9J-MG9W-V7WM

Vulnerability from github – Published: 2025-08-23 03:30 – Updated: 2025-08-25 20:45
VLAI
Summary
Liferay Portal JSONWS API endpoint shares sensitive information
Details

Liferay Portal 7.4.0 through 7.4.3.131, and Liferay DXP 2024.Q4.0 through 2024.Q4.7, 2024.Q3.1 through 2024.Q3.13, 2024.Q2.0 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.15 and 7.4 GA through update 92 allows authenticated users without any permissions to access sensitive information of admin users using JSONWS APIs.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.liferay.portal:com.liferay.portal.impl"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "108.1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-43768"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-201"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-08-25T20:45:44Z",
    "nvd_published_at": "2025-08-23T03:15:30Z",
    "severity": "MODERATE"
  },
  "details": "Liferay Portal 7.4.0 through 7.4.3.131, and Liferay DXP 2024.Q4.0 through 2024.Q4.7, 2024.Q3.1 through 2024.Q3.13, 2024.Q2.0 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.15 and 7.4 GA through update 92 allows authenticated users without any permissions to access sensitive information of admin users using JSONWS APIs.",
  "id": "GHSA-cv9j-mg9w-v7wm",
  "modified": "2025-08-25T20:45:44Z",
  "published": "2025-08-23T03:30:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-43768"
    },
    {
      "type": "WEB",
      "url": "https://github.com/liferay/liferay-portal/commit/efdbdbce73605ecd13b1a5e60f5186cc59f09c16"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/liferay/liferay-portal"
    },
    {
      "type": "WEB",
      "url": "https://liferay.atlassian.net/browse/LPE-18154"
    },
    {
      "type": "WEB",
      "url": "https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-43768"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Liferay Portal JSONWS API endpoint shares sensitive information"
}

GHSA-CVFV-FCRR-4W22

Vulnerability from github – Published: 2025-12-18 09:30 – Updated: 2026-01-20 15:32
VLAI
Details

Insertion of Sensitive Information Into Sent Data vulnerability in StylemixThemes MasterStudy LMS Pro masterstudy-lms-learning-management-system-pro allows Retrieve Embedded Sensitive Data.This issue affects MasterStudy LMS Pro: from n/a through < 4.7.16.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-64213"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-201"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-18T08:16:11Z",
    "severity": "HIGH"
  },
  "details": "Insertion of Sensitive Information Into Sent Data vulnerability in StylemixThemes MasterStudy LMS Pro masterstudy-lms-learning-management-system-pro allows Retrieve Embedded Sensitive Data.This issue affects MasterStudy LMS Pro: from n/a through \u003c 4.7.16.",
  "id": "GHSA-cvfv-fcrr-4w22",
  "modified": "2026-01-20T15:32:31Z",
  "published": "2025-12-18T09:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-64213"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/Wordpress/Plugin/masterstudy-lms-learning-management-system-pro/vulnerability/wordpress-masterstudy-lms-pro-plugin-4-7-16-sensitive-data-exposure-vulnerability?_s_id=cve"
    },
    {
      "type": "WEB",
      "url": "https://vdp.patchstack.com/database/Wordpress/Plugin/masterstudy-lms-learning-management-system-pro/vulnerability/wordpress-masterstudy-lms-pro-plugin-4-7-16-sensitive-data-exposure-vulnerability?_s_id=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-CVXX-FGP2-3X79

Vulnerability from github – Published: 2026-05-29 21:31 – Updated: 2026-05-29 21:31
VLAI
Details

In JetBrains YouTrack before 2026.1.13162 information disclosure was possible on fetchApp requests

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-49370"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-201"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-29T19:16:26Z",
    "severity": "LOW"
  },
  "details": "In JetBrains YouTrack before 2026.1.13162 information disclosure was possible on fetchApp requests",
  "id": "GHSA-cvxx-fgp2-3x79",
  "modified": "2026-05-29T21:31:22Z",
  "published": "2026-05-29T21:31:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49370"
    },
    {
      "type": "WEB",
      "url": "https://www.jetbrains.com/privacy-security/issues-fixed"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-CX4J-M7PG-57Q2

Vulnerability from github – Published: 2026-07-09 12:30 – Updated: 2026-07-09 12:30
VLAI
Details

HCL DevOps Deploy / HCL Launch could disclose sensitive configurations and secrets to authenticated users in API responses that could be used in further attacks against the system.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-56460"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-201"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-09T10:16:27Z",
    "severity": "MODERATE"
  },
  "details": "HCL DevOps Deploy / HCL Launch could disclose sensitive configurations and secrets to authenticated users in API responses that could be used in further attacks against the system.",
  "id": "GHSA-cx4j-m7pg-57q2",
  "modified": "2026-07-09T12:30:27Z",
  "published": "2026-07-09T12:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56460"
    },
    {
      "type": "WEB",
      "url": "https://support.hcl-software.com/csm?id=kb_article\u0026sysparm_article=KB0131697"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-F3RG-XQJJ-CJ9W

Vulnerability from github – Published: 2026-05-18 13:26 – Updated: 2026-06-09 10:27
VLAI
Summary
n8n-MCP: Workflow telemetry sanitizer could retain partial values from URL-shaped node parameters
Details

Summary

In affected versions of n8n-mcp, the workflow telemetry sanitizer could retain partial fragments of URL-shaped node parameters before sending workflow data to the project's anonymous telemetry backend. Values placed in HTTP-Request-style node parameters — such as customer or tenant identifiers, short secrets embedded in query strings, and signed request parameters — could therefore appear in stored telemetry, contrary to the collection boundary documented in PRIVACY.md.

Impact

Operators with access to the project's telemetry backend could read partial fragments of workflow URL parameters that should not have been collected. The bug was scoped to URL-shaped fields in workflow definitions; credentials, OAuth tokens, and workflow execution data are not affected — credentials are removed by a separate code path, and long secrets and known-provider tokens are matched by dedicated patterns.

Patches

Fixed in n8n-mcp 2.51.3. Upgrading is the recommended remediation.

Workarounds

For users who cannot upgrade immediately, disable anonymous telemetry by setting any of these environment variables to true:

  • N8N_MCP_TELEMETRY_DISABLED
  • TELEMETRY_DISABLED
  • DISABLE_TELEMETRY

Credit

Reported by @u-ktdi.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "n8n-mcp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.51.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-45582"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-201"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-18T13:26:51Z",
    "nvd_published_at": "2026-05-29T14:16:30Z",
    "severity": "MODERATE"
  },
  "details": "## Summary\n\nIn affected versions of n8n-mcp, the workflow telemetry sanitizer could retain partial fragments of URL-shaped node parameters before sending workflow data to the project\u0027s anonymous telemetry backend. Values placed in HTTP-Request-style node parameters \u2014 such as customer or tenant identifiers, short secrets embedded in query strings, and signed request parameters \u2014 could therefore appear in stored telemetry, contrary to the collection boundary documented in `PRIVACY.md`.\n\n## Impact\n\nOperators with access to the project\u0027s telemetry backend could read partial fragments of workflow URL parameters that should not have been collected. The bug was scoped to URL-shaped fields in workflow *definitions*; credentials, OAuth tokens, and workflow *execution* data are not affected \u2014 credentials are removed by a separate code path, and long secrets and known-provider tokens are matched by dedicated patterns.\n\n## Patches\n\nFixed in **n8n-mcp `2.51.3`**. Upgrading is the recommended remediation.\n\n## Workarounds\n\nFor users who cannot upgrade immediately, disable anonymous telemetry by setting any of these environment variables to `true`:\n\n- `N8N_MCP_TELEMETRY_DISABLED`\n- `TELEMETRY_DISABLED`\n- `DISABLE_TELEMETRY`\n\n## Credit\n\nReported by @u-ktdi.",
  "id": "GHSA-f3rg-xqjj-cj9w",
  "modified": "2026-06-09T10:27:22Z",
  "published": "2026-05-18T13:26:51Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-f3rg-xqjj-cj9w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45582"
    },
    {
      "type": "WEB",
      "url": "https://github.com/czlonkowski/n8n-mcp/pull/782"
    },
    {
      "type": "WEB",
      "url": "https://github.com/czlonkowski/n8n-mcp/commit/6cf6fef653fcd6d598f2f356aac4754931c7329f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/czlonkowski/n8n-mcp"
    },
    {
      "type": "WEB",
      "url": "https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.51.3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "n8n-MCP: Workflow telemetry sanitizer could retain partial values from URL-shaped node parameters"
}

GHSA-F6MX-673H-GX7J

Vulnerability from github – Published: 2026-01-23 15:31 – Updated: 2026-01-23 21:30
VLAI
Details

Insertion of Sensitive Information Into Sent Data vulnerability in Cargus eCommerce Cargus cargus allows Retrieve Embedded Sensitive Data.This issue affects Cargus: from n/a through <= 1.5.8.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-24589"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-201"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-23T15:16:16Z",
    "severity": "MODERATE"
  },
  "details": "Insertion of Sensitive Information Into Sent Data vulnerability in Cargus eCommerce Cargus cargus allows Retrieve Embedded Sensitive Data.This issue affects Cargus: from n/a through \u003c= 1.5.8.",
  "id": "GHSA-f6mx-673h-gx7j",
  "modified": "2026-01-23T21:30:43Z",
  "published": "2026-01-23T15:31:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24589"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/Wordpress/Plugin/cargus/vulnerability/wordpress-cargus-plugin-1-5-8-sensitive-data-exposure-vulnerability?_s_id=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

Mitigation
Requirements

Specify which data in the software should be regarded as sensitive. Consider which types of users should have access to which types of data.

Mitigation
Implementation

Ensure that any possibly sensitive data specified in the requirements is verified with designers to ensure that it is either a calculated risk or mitigated elsewhere. Any information that is not necessary to the functionality should be removed in order to lower both the overhead and the possibility of security sensitive data being sent.

Mitigation
System Configuration

Setup default error messages so that unexpected errors do not disclose sensitive information.

Mitigation MIT-46
Architecture and Design

Strategy: Separation of Privilege

  • Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
CAPEC-12: Choosing Message Identifier

This pattern of attack is defined by the selection of messages distributed via multicast or public information channels that are intended for another client by determining the parameter value assigned to that client. This attack allows the adversary to gain access to potentially privileged information, and to possibly perpetrate other attacks through the distribution means by impersonation. If the channel/message being manipulated is an input rather than output mechanism for the system, (such as a command bus), this style of attack could be used to change the adversary's identifier to more a privileged one.

CAPEC-217: Exploiting Incorrectly Configured SSL/TLS

An adversary takes advantage of incorrectly configured SSL/TLS communications that enables access to data intended to be encrypted. The adversary may also use this type of attack to inject commands or other traffic into the encrypted stream to cause compromise of either the client or server.

CAPEC-612: WiFi MAC Address Tracking

In this attack scenario, the attacker passively listens for WiFi messages and logs the associated Media Access Control (MAC) addresses. These addresses are intended to be unique to each wireless device (although they can be configured and changed by software). Once the attacker is able to associate a MAC address with a particular user or set of users (for example, when attending a public event), the attacker can then scan for that MAC address to track that user in the future.

CAPEC-613: WiFi SSID Tracking

In this attack scenario, the attacker passively listens for WiFi management frame messages containing the Service Set Identifier (SSID) for the WiFi network. These messages are frequently transmitted by WiFi access points (e.g., the retransmission device) as well as by clients that are accessing the network (e.g., the handset/mobile device). Once the attacker is able to associate an SSID with a particular user or set of users (for example, when attending a public event), the attacker can then scan for this SSID to track that user in the future.

CAPEC-618: Cellular Broadcast Message Request

In this attack scenario, the attacker uses knowledge of the target’s mobile phone number (i.e., the number associated with the SIM used in the retransmission device) to cause the cellular network to send broadcast messages to alert the mobile device. Since the network knows which cell tower the target’s mobile device is attached to, the broadcast messages are only sent in the Location Area Code (LAC) where the target is currently located. By triggering the cellular broadcast message and then listening for the presence or absence of that message, an attacker could verify that the target is in (or not in) a given location.

CAPEC-619: Signal Strength Tracking

In this attack scenario, the attacker passively monitors the signal strength of the target’s cellular RF signal or WiFi RF signal and uses the strength of the signal (with directional antennas and/or from multiple listening points at once) to identify the source location of the signal. Obtaining the signal of the target can be accomplished through multiple techniques such as through Cellular Broadcast Message Request or through the use of IMSI Tracking or WiFi MAC Address Tracking.

CAPEC-621: Analysis of Packet Timing and Sizes

An attacker may intercept and log encrypted transmissions for the purpose of analyzing metadata such as packet timing and sizes. Although the actual data may be encrypted, this metadata may reveal valuable information to an attacker. Note that this attack is applicable to VOIP data as well as application data, especially for interactive apps that require precise timing and low-latency (e.g. thin-clients).

CAPEC-622: Electromagnetic Side-Channel Attack

In this attack scenario, the attacker passively monitors electromagnetic emanations that are produced by the targeted electronic device as an unintentional side-effect of its processing. From these emanations, the attacker derives information about the data that is being processed (e.g. the attacker can recover cryptographic keys by monitoring emanations associated with cryptographic processing). This style of attack requires proximal access to the device, however attacks have been demonstrated at public conferences that work at distances of up to 10-15 feet. There have not been any significant studies to determine the maximum practical distance for such attacks. Since the attack is passive, it is nearly impossible to detect and the targeted device will continue to operate as normal after a successful attack.

CAPEC-623: Compromising Emanations Attack

Compromising Emanations (CE) are defined as unintentional signals which an attacker may intercept and analyze to disclose the information processed by the targeted equipment. Commercial mobile devices and retransmission devices have displays, buttons, microchips, and radios that emit mechanical emissions in the form of sound or vibrations. Capturing these emissions can help an adversary understand what the device is doing.