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High severity · published Apr 28, 2026
CVE-2026-42167
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…
8.1
CVSS
7.4%
EPSS
No
On KEV
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).
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)7.4% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PR
ProFTPD · ProFTPD
1.3.7b before 1.3.9a · source: vendor, NVD
In the news
VulnerabilityCritical
[remote] CVE-2026-42167 - ProFTPD mod_sql post-authentication SQLi - RCE
CVE-2026-42167 - ProFTPD mod_sql post-authentication SQLi - RCE
CVE-2026-42167
Aug 25, 2026·Exploit Database
Affected product
PR
ProFTPD
ProFTPD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-42167
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-42167
Release Notes
http://www.proftpd.org/docs/RELEASE_NOTES-1.3.10rc1
Exploit
https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-poc
Exploit
https://github.com/proftpd/proftpd/issues/2052
Mailing List
https://www.openwall.com/lists/oss-security/2026/05/01/4
Exploit
https://zeropath.com/blog/proftpd-cve-2026-42167-auth-bypass-privesc-rce
Mailing List
http://www.openwall.com/lists/oss-security/2026/05/01/13
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