CVE-2026-42167
ProFTPD mod_sql Remote Code Execution Vulnerability
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).
INFO
Published Date :
April 28, 2026, 11:16 p.m.
Last Modified :
July 8, 2026, 3:26 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 8254265b-2729-46b6-b9e3-3dfca2d5bfca | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update ProFTPD to version 1.3.10rc1 or later.
- Ensure logging does not expand usernames.
- Configure SQL backend to disallow commands.
Public PoC/Exploit Available at Github
CVE-2026-42167 has a 10 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-42167.
| URL | Resource |
|---|---|
| http://www.proftpd.org/docs/RELEASE_NOTES-1.3.10rc1 | Release Notes |
| https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-poc | Exploit Third Party Advisory |
| https://github.com/proftpd/proftpd/issues/2052 | Exploit Issue Tracking Patch |
| https://www.openwall.com/lists/oss-security/2026/05/01/4 | Mailing List |
| https://zeropath.com/blog/proftpd-cve-2026-42167-auth-bypass-privesc-rce | Exploit Press/Media Coverage Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2026/05/01/13 | Mailing List |
| http://www.openwall.com/lists/oss-security/2026/05/01/4 | Mailing List |
| https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-poc | Exploit Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-42167 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-42167
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Task for harborframework.
Dockerfile C Makefile Shell Python
None
Go
ProFTPD SQL injection PoC
Go
security scan and patch for linux system
Shell
Python exploit for CVE-2026-42167 (ProFTPD mod_sql). Features automated file scanning and timing-based blind data exfiltration.
exploit penetration-testing postgressql proftpd security-research sql-injection cve-2026-42167
Python
Phase-locked temporal wedge exploitation — replacing SQL injection with CTT physics
Python
Pre-Auth RCE in ProFTPD via mod_sql is_escaped_text() bypass (CVE-2026-42167)
Python
Independent reproduction, code-level root-cause analysis, and realistic-exposure write-up for CVE-2026-42167 (ProFTPD mod_sql is_escaped_text() bypass).
Python Shell
POCs to demonstrate CVE-2026-42167 in ProFTPD
Python Shell
Cathedral-Grade Security for AI Agents. Attack vectors updated daily. Local-first, zero API cost. MIT licensed.
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-42167 vulnerability anywhere in the article.
-
CybersecurityNews
ProFTPD’s SQL Injection Vulnerability Enables Remote Code Execution Attacks
A critical SQL injection vulnerability in ProFTPD, one of the Internet’s most widely deployed FTP servers. Tracked as CVE-2026-42167, this flaw carries a CVSS severity score of 8.1 and affects the mod ... Read more
The following table lists the changes that have been made to the
CVE-2026-42167 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 08, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:proftpd:proftpd:*:*:*:*:*:*:*:* versions up to (including) 1.3.9b Added Reference Type MITRE: http://www.proftpd.org/docs/RELEASE_NOTES-1.3.10rc1 Types: Release Notes Added Reference Type MITRE: https://github.com/proftpd/proftpd/issues/2052 Types: Exploit, Issue Tracking, Patch Added Reference Type MITRE: https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-poc Types: Exploit, Third Party Advisory Added Reference Type MITRE: https://www.openwall.com/lists/oss-security/2026/05/01/4 Types: Mailing List Added Reference Type MITRE: https://zeropath.com/blog/proftpd-cve-2026-42167-auth-bypass-privesc-rce Types: Exploit, Press/Media Coverage, Third Party Advisory Added Reference Type CISA-ADP: https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-poc Types: Exploit, Third Party Advisory Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/05/01/13 Types: Mailing List Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/05/01/4 Types: Mailing List -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'ProFTPD', 'product': 'ProFTPD', 'versions': [{'status': 'affected', 'version': '1.3.7b', 'lessThan': '1.3.9a', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-42167', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-04-29T12:51:40.626237Z'} -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
May. 01, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/05/01/13 -
CVE Modified by [email protected]
May. 01, 2026
Action Type Old Value New Value Changed 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). 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). Added Reference https://www.openwall.com/lists/oss-security/2026/05/01/4 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
May. 01, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/05/01/4 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 29, 2026
Action Type Old Value New Value Added Reference https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-poc -
New CVE Received by [email protected]
Apr. 28, 2026
Action Type Old Value New Value 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). Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-89 Added Reference http://www.proftpd.org/docs/RELEASE_NOTES-1.3.10rc1 Added Reference https://github.com/proftpd/proftpd/issues/2052 Added Reference https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-poc Added Reference https://zeropath.com/blog/proftpd-cve-2026-42167-auth-bypass-privesc-rce