CVE-2020-15152: ftp-srv is an npm package which is a modern and extensible FTP server designed to be simple yet configurable

Q: How do I fix CVE-2020-15152?

ftp-srv: upgrade to 2.19.6, 3.1.2, 4.3.4. Exact commands for each OS are on this page.

Q: Is CVE-2020-15152 being exploited?

CVE-2020-15152 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-15152 affect?

CVE-2020-15152 affects ftp-srv. Severity is critical (CVSS 9.1). ftp-srv is an npm package which is a modern and extensible FTP server designed to be simple yet configurable. In ftp-srv before versions 2.19.6, 3.1.2, and 4.3.4 are vulnerable to Server-Side Request Forgery. The PORT command allows arbitra

Q: How urgent is CVE-2020-15152?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEUPGRADE

CVE-2020-15152 is a critical-severity flaw (CVSS 9.1) affecting ftp-srv. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ftp-srv is an npm package which is a modern and extensible FTP server designed to be simple yet configurable. In ftp-srv before versions 2.19.6, 3.1.2, and 4.3.4 are vulnerable to Server-Side Request Forgery. The PORT command allows arbitrary IPs which can be used to cause the server to make a connection elsewhere. A possible workaround is blocking the PORT through the configuration. This issue is fixed in version2 2.19.6, 3.1.2, and 4.3.4. More

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 21%)
CISA exploited list	No
Weakness	CWE-918
Published	2020-08-17
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: ftp-srv project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-08-17 22:15 UTCPublished CVE record published
2026-06-17 02:56 UTCUpdated Record last modified

ftp-srv project ftp-srv UPGRADE

Affected: < 2.19.6 · >= 3.0.0 and < 3.1.2 · >= 4.0.0 and < 4.3.4

Fixed in: 2.19.6, 3.1.2, 4.3.4

Safe to downgrade to: a release before 3.0.0

1. Check installed version

npm ls ftp-srv

2. UPGRADE to 2.19.6

npm install ftp-srv@">=2.19.6"

3. If no update is available yet, DOWNGRADE to a release before 3.0.0

npm view ftp-srv versions npm install ftp-srv@"<3.0.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-15152?

ftp-srv: upgrade to 2.19.6, 3.1.2, 4.3.4. Exact commands for each OS are on this page.

Is CVE-2020-15152 being exploited?

CVE-2020-15152 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-15152 affect?

CVE-2020-15152 affects ftp-srv. Severity is critical (CVSS 9.1). ftp-srv is an npm package which is a modern and extensible FTP server designed to be simple yet configurable. In ftp-srv before versions 2.19.6, 3.1.2, and 4.3.4 are vulnerable to Server-Side Request Forgery. The PORT command allows arbitra

How urgent is CVE-2020-15152?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

npm packages vulnerabilities

Related CVEs

CVE-2020-26299 MEDIUM 6.3 UPGRADE ftp-srv is an open-source FTP server designed to be simple yet configurable

References

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