CVE-2026-102990

basic-ftp is an FTP client for Node.js. Prior to 6.2.1, Client.list() can be forced by a malicious or compromised FTP server to spend quadratic CPU time parsing a directory listing because the RE_LINE expression in src/parseListUnix.ts backtracks across adjacent variable-length owner and group fields when a long Unix-style line has a valid prefix but cannot satisfy the later size and date fields. parseList() selects a parser from the last nonblank line and then applies it to every line, so a normal final line can select the Unix parser while an earlier crafted line blocks the Node.js event loop and freezes the process. This issue is fixed in version 6.2.1.

CVSS

No CVSS.

References

Link	Resource
https://github.com/patrickjuchli/basic-ftp/commit/d0d9e07c56e519587bb50532ac6eadbb0cb0cfe9
https://github.com/patrickjuchli/basic-ftp/releases/tag/v6.2.1
https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-c475-qrg2-pj4r
https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-c475-qrg2-pj4r

Configurations

No configuration.

History

30 Sep 2026, 21:17

Type	Values Removed	Values Added
References	~~() https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-c475-qrg2-pj4r -~~	() https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-c475-qrg2-pj4r -

30 Sep 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-30 20:17

Updated : 2026-09-30 21:17

NVD link : CVE-2026-102990

Mitre link : CVE-2026-102990

CVE.ORG link : CVE-2026-102990

JSON object : View

Products Affected

No product.

CWE

CWE-1333

Inefficient Regular Expression Complexity

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