Vulnerability DatabaseCVE-2026-42167
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CVE-2026-42167
Published:April 28, 2026
Updated:May 18, 2026
mod_sql in ProFTPD before 1.3.9a 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).
Affected Packages
https://github.com/proftpd/proftpd.git (GITHUB):
Affected version(s) >=v1.3.5a <v1.3.10rc1
Fix Suggestion:
Update to version v1.3.10rc1
Related Resources (7)
https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-poc
https://github.com/proftpd/proftpd/issues/2052
http://www.openwall.com/lists/oss-security/2026/05/01/4
https://www.openwall.com/lists/oss-security/2026/05/01/4
https://zeropath.com/blog/proftpd-cve-2026-42167-auth-bypass-privesc-rce
http://www.openwall.com/lists/oss-security/2026/05/01/13
http://www.proftpd.org/docs/RELEASE_NOTES-1.3.10rc1
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CVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CWE-89
EPSS
Base Score:
7.03