CVE-2026-27699CRITICAL 9.8EPSS p40.4%

CVE-2026-27699CVE-2026-27699

Description

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.53% probability of exploitation · percentile 40.4% · 2026-06-19T12:03:05Z
Published2026-02-25
Last modified2026-02-26

Underlying weaknesses· 1

CWE-22

References

  1. https://github.com/patrickjuchli/basic-ftp/commit/2a2a0e6514357b9eda07c2f8afbd3f04727a7cd9
  2. https://github.com/patrickjuchli/basic-ftp/releases/tag/v5.2.0
  3. https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-5rq4-664w-9x2c

1

TypeTargetConfidenceTier
WeaknessImproper Limitation of a Pathname to a Restricted Directory ('Path Traversal')cwe-220%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.