CVE-2026-42167Public exploitNetwork attack vectorHinoki check available

Unauthenticated code execution via SQLLog escaping bypass

Published Apr 28, 2026 · Updated Apr 28, 2026

SQL injection in mod_sql in ProFTPD before 1.3.9a allows remote attackers to execute arbitrary SQL through crafted FTP input. sql_resolved_append_text trusts quote-delimited attacker-controlled expansion values as pre-escaped and appends them to SQLLog queries without backend escaping. Exploitation requires mod_sql logging with an attacker-controlled expansion; command-capable database backends allow code execution on the database host.

CVSS severity8.1
High
EPSS probability7.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SQL injection in mod_sql in ProFTPD before 1.3.9a allows remote attackers to execute arbitrary SQL through crafted FTP input. sql_resolved_append_text trusts quote-delimited attacker-controlled expansion values as pre-escaped and appends them to SQLLog queries without backend escaping. Exploitation requires mod_sql logging with an attacker-controlled expansion; command-capable database backends allow code execution on the database host.

The record

CVE
CVE-2026-42167
Published
Apr 28, 2026
Updated
Apr 28, 2026
Vendor
ProFTPD Project
Product
ProFTPD
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.3.7b <1.3.10rc1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ProFTPD Project · ProFTPDversion=1.3.7b <1.3.10rc1

Published CVSS scores

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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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