CVE-2026-42167

HighCVSS 8.1/10Last modified Jul 24, 2026

Description

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).

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-89

Affected software

Vendor	Product	Versions
ProFTPD	ProFTPD	>= 1.3.7b, < 1.3.9a

References

http://www.proftpd.org/docs/RELEASE_NOTES-1.3.10rc1Release Notes
https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-pocExploit, Third Party Advisory
https://github.com/proftpd/proftpd/issues/2052Exploit, Issue Tracking, Patch
https://www.openwall.com/lists/oss-security/2026/05/01/4Mailing List
https://zeropath.com/blog/proftpd-cve-2026-42167-auth-bypass-privesc-rceExploit, Press/Media Coverage, Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/05/01/13Mailing List
http://www.openwall.com/lists/oss-security/2026/05/01/4Mailing List
https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-pocExploit, Third Party Advisory

Timeline

Published: Apr 28, 2026
Last modified: Jul 24, 2026
NVD status: Analyzed

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