CVE-2026-42167

high

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).

References

https://zeropath.com/blog/proftpd-cve-2026-42167-auth-bypass-privesc-rce

https://www.openwall.com/lists/oss-security/2026/05/01/4

https://github.com/proftpd/proftpd/issues/2052

https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-poc

http://www.proftpd.org/docs/RELEASE_NOTES-1.3.10rc1

http://www.openwall.com/lists/oss-security/2026/05/01/4

http://www.openwall.com/lists/oss-security/2026/05/01/13

Details

Source: Mitre, NVD

Published: 2026-04-28

Updated: 2026-05-01

Risk Information

CVSS v2

Base Score: 7.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.1

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