CVE-2026-41324

Description

basic-ftp is an FTP client for Node.js. Versions prior to 5.3.0 are vulnerable to denial of service through unbounded memory growth while processing directory listings from a remote FTP server. A malicious or compromised server can send an extremely large or never-ending listing response to `Client.list()`, causing the client process to consume memory until it becomes unstable or crashes. Version 5.3.0 fixes the issue.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploit Prediction

0.0006

Probability of exploitation

0.17%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption

CWE-770 CWE-770

Affected Products

Vendor	Product	Versions
patrickjuchli	basic-ftp	< 5.3.0

References

Advisories & Patches

https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-rp42-5vxx-qpwr https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-rp42-5vxx-qpwr

Exploits

https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-rp42-5vxx-qpwr https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-rp42-5vxx-qpwr

Frequently Asked Questions

What is CVE-2026-41324? +

basic-ftp is an FTP client for Node.js. Versions prior to 5.3.0 are vulnerable to denial of service through unbounded memory growth while processing directory listings from a remote FTP server. A malicious or compromised server can send an extremely large or never-ending listing response to `Client.list()`, causing the client process to consume memory until it becomes unstable or crashes. Version 5.3.0 fixes the issue. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-41324? +

CVE-2026-41324 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0006, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-41324? +

CVE-2026-41324 affects products from patrickjuchli, specifically: basic-ftp. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-41324? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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