ubuntu-cve-2026-27699
Vulnerability from osv_ubuntu
Published
2026-02-25 15:20
Modified
2026-05-20 15:26
Summary
Details

The basic-ftp FTP client library for Node.js contains a path traversal vulnerability (CWE-22) in versions prior to 5.2.0 in the downloadToDir() method. A malicious FTP server can send directory listings with filenames containing path traversal sequences (../) that cause files to be written outside the intended download directory. Version 5.2.0 patches the issue.

Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-agent-base",
            "binary_version": "7.1.0~0~2023071921-5"
          },
          {
            "binary_name": "node-args",
            "binary_version": "5.0.3~0~2023071921-5"
          },
          {
            "binary_name": "node-basic-ftp",
            "binary_version": "5.0.3~0~2023071921-5"
          },
          {
            "binary_name": "node-data-uri-to-buffer",
            "binary_version": "5.0.1~0~2023071921-5"
          },
          {
            "binary_name": "node-degenerator",
            "binary_version": "5.0.1~0~2023071921-5"
          },
          {
            "binary_name": "node-get-uri",
            "binary_version": "6.0.1~0~2023071921-5"
          },
          {
            "binary_name": "node-http-proxy-agent",
            "binary_version": "7.0.0~0~2023071921-5"
          },
          {
            "binary_name": "node-https-proxy-agent",
            "binary_version": "7.0.1~0~2023071921-5"
          },
          {
            "binary_name": "node-pac-proxy-agent",
            "binary_version": "7.0.0~0~2023071921-5"
          },
          {
            "binary_name": "node-pac-resolver",
            "binary_version": "7.0.0~0~2023071921-5"
          },
          {
            "binary_name": "node-proxy",
            "binary_version": "2.1.1~0~2023071921-5"
          },
          {
            "binary_name": "node-proxy-agent",
            "binary_version": "6.3.0~0~2023071921-5"
          },
          {
            "binary_name": "node-socks-proxy-agent",
            "binary_version": "8.0.1~0~2023071921-5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "node-proxy-agents",
        "purl": "pkg:deb/ubuntu/node-proxy-agents@0~2023071921-5?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0~2023071921-5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-agent-base",
            "binary_version": "7.1.4~0~2025070717-2"
          },
          {
            "binary_name": "node-args",
            "binary_version": "5.0.3~0~2025070717-2"
          },
          {
            "binary_name": "node-basic-ftp",
            "binary_version": "5.0.5~0~2025070717-2"
          },
          {
            "binary_name": "node-data-uri-to-buffer",
            "binary_version": "6.0.2~0~2025070717-2"
          },
          {
            "binary_name": "node-degenerator",
            "binary_version": "5.0.1~0~2025070717-2"
          },
          {
            "binary_name": "node-get-uri",
            "binary_version": "6.0.5~0~2025070717-2"
          },
          {
            "binary_name": "node-http-proxy-agent",
            "binary_version": "7.0.2~0~2025070717-2"
          },
          {
            "binary_name": "node-https-proxy-agent",
            "binary_version": "7.0.6~0~2025070717-2"
          },
          {
            "binary_name": "node-pac-proxy-agent",
            "binary_version": "7.2.0~0~2025070717-2"
          },
          {
            "binary_name": "node-pac-resolver",
            "binary_version": "7.0.1~0~2025070717-2"
          },
          {
            "binary_name": "node-proxy",
            "binary_version": "2.2.0~0~2025070717-2"
          },
          {
            "binary_name": "node-proxy-agent",
            "binary_version": "6.5.0~0~2025070717-2"
          },
          {
            "binary_name": "node-socks-proxy-agent",
            "binary_version": "8.0.5~0~2025070717-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "node-proxy-agents",
        "purl": "pkg:deb/ubuntu/node-proxy-agents@0~2025070717-2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0~2024040606-5",
        "0~2024040606-6",
        "0~2025070717-1",
        "0~2025070717-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-agent-base",
            "binary_version": "7.1.4~0~2025070717+~cs15.2.7-1build1"
          },
          {
            "binary_name": "node-args",
            "binary_version": "5.0.3~0~2025070717+~cs15.2.7-1build1"
          },
          {
            "binary_name": "node-basic-ftp",
            "binary_version": "5.2.0~0~2025070717+~cs15.2.7-1build1"
          },
          {
            "binary_name": "node-data-uri-to-buffer",
            "binary_version": "6.0.2~0~2025070717+~cs15.2.7-1build1"
          },
          {
            "binary_name": "node-degenerator",
            "binary_version": "5.0.1~0~2025070717+~cs15.2.7-1build1"
          },
          {
            "binary_name": "node-get-uri",
            "binary_version": "6.0.5~0~2025070717+~cs15.2.7-1build1"
          },
          {
            "binary_name": "node-http-proxy-agent",
            "binary_version": "7.0.2~0~2025070717+~cs15.2.7-1build1"
          },
          {
            "binary_name": "node-https-proxy-agent",
            "binary_version": "7.0.6~0~2025070717+~cs15.2.7-1build1"
          },
          {
            "binary_name": "node-pac-proxy-agent",
            "binary_version": "7.2.0~0~2025070717+~cs15.2.7-1build1"
          },
          {
            "binary_name": "node-pac-resolver",
            "binary_version": "7.0.1~0~2025070717+~cs15.2.7-1build1"
          },
          {
            "binary_name": "node-proxy",
            "binary_version": "2.2.0~0~2025070717+~cs15.2.7-1build1"
          },
          {
            "binary_name": "node-proxy-agent",
            "binary_version": "6.5.0~0~2025070717+~cs15.2.7-1build1"
          },
          {
            "binary_name": "node-socks-proxy-agent",
            "binary_version": "8.0.5~0~2025070717+~cs15.2.7-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "node-proxy-agents",
        "purl": "pkg:deb/ubuntu/node-proxy-agents@0~2025070717+~cs15.2.7-1build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0~2025070717-2",
        "0~2025070717-6",
        "0~2025070717+~cs15.2.7-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "The `basic-ftp` FTP client library for Node.js contains a path traversal vulnerability (CWE-22) in versions prior to 5.2.0 in the `downloadToDir()`\u00a0method. A malicious FTP server can send directory listings with filenames containing path traversal sequences (`../`) that cause files to be written outside the intended download directory. Version 5.2.0 patches the issue.",
  "id": "UBUNTU-CVE-2026-27699",
  "modified": "2026-05-20T15:26:07Z",
  "published": "2026-02-25T15:20:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-27699"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-27699"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-5rq4-664w-9x2c"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/patrickjuchli/basic-ftp/commit/2a2a0e6514357b9eda07c2f8afbd3f04727a7cd9"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/patrickjuchli/basic-ftp/commit/2a2a0e6514357b9eda07c2f8afbd3f04727a7cd9"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/patrickjuchli/basic-ftp/releases/tag/v5.2.0"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-27699"
  ]
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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