CVE-2026-42167 - Vulnerability Details - OpenCVE

mod_sql in ProFTPD before 1.3.10rc1 allows remote attackers to execute arbitrary code via a username, in scenarios where there is logging of USER requests with an expansion such as %U, and the SQL backend allows commands (e.g., COPY TO PROGRAM).

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation poc

Automatable no

Technical Impact total

Vendors	Products
Proftpd	Proftpd

No data.

No data.

References

Link	Providers
http://www.proftpd.org/docs/RELEASE_NOTES-1.3.10rc1
https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-poc
https://github.com/proftpd/proftpd/issues/2052
https://zeropath.com/blog/proftpd-cve-2026-42167-auth-bypass-privesc-rce

History

Wed, 29 Apr 2026 16:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Wed, 29 Apr 2026 02:00:00 +0000

Type	Values Removed	Values Added
Title		ProFTPD mod_sql Remote Code Execution via Username Injection

Tue, 28 Apr 2026 22:45:00 +0000

Type	Values Removed	Values Added
Description		mod_sql in ProFTPD before 1.3.10rc1 allows remote attackers to execute arbitrary code via a username, in scenarios where there is logging of USER requests with an expansion such as %U, and the SQL backend allows commands (e.g., COPY TO PROGRAM).
First Time appeared		Proftpd Proftpd proftpd
Weaknesses		CWE-89
CPEs		cpe:2.3:a:proftpd:proftpd::::::::
Vendors & Products		Proftpd Proftpd proftpd
References		http://www.proftpd.org/docs/RELEASE_NOTES-1.3.10rc1 https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-poc https://github.com/proftpd/proftpd/issues/2052 https://zeropath.com/blog/proftpd-cve-2026-42167-auth-bypass-privesc-rce
Metrics		cvssV3_1 `{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-04-28T00:00:00.000Z

Updated: 2026-04-29T15:12:37.818Z

Reserved: 2026-04-24T00:00:00.000Z

Link: CVE-2026-42167

Vulnrichment

Updated: 2026-04-29T12:53:05.083Z

NVD

Status : Awaiting Analysis

Published: 2026-04-28T23:16:20.610

Modified: 2026-04-30T15:48:26.580

Link: CVE-2026-42167

Redhat

No data.

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