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CVE-2026-44331

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in...

8.1 HighFix available

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.46%Up 0.4 points since May 6, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.1

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.

Record
CVE-2026-44331
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-89
Updated
2026-11-02
EUVDEUVD-2026-27484 8.1

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.

Record
EUVD-2026-27484
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-jmg2-v72j-gmvc 8.1

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in...

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.

Record
GHSA-jmg2-v72j-gmvc
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-89
Updated
2026-11-02
NVD 8.1

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.

Record
CVE-2026-44331
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-89
Updated
2026-11-02
OSVALPINE-CVE-2026-44331 8.1

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.

Record
ALPINE-CVE-2026-44331
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-03
OSV 8.1

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.

Record
CVE-2026-44331
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-89
Updated
2026-11-02
Show 8 moreShow less
OSVDEBIAN-CVE-2026-44331 8.1

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.

Record
DEBIAN-CVE-2026-44331
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2026-2264 8.1

proftpd security update

ProFTPD is an enhanced FTP server with a focus toward simplicity, security, and ease of configuration. It features a very Apache-like configuration syntax, and a highly customizable server infrastructure, including support for multiple 'virtual' FTP servers, anonymous FTP, and permission-based directory visibility. This package defaults to the standalone behavior of ProFTPD, but all the needed scripts to have it run by systemd instead are included.

Security Fix(es):

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).(CVE-2026-42167)

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.(CVE-2026-44331)

Record
OESA-2026-2264
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2026-2265 8.1

proftpd security update

ProFTPD is an enhanced FTP server with a focus toward simplicity, security, and ease of configuration. It features a very Apache-like configuration syntax, and a highly customizable server infrastructure, including support for multiple 'virtual' FTP servers, anonymous FTP, and permission-based directory visibility. This package defaults to the standalone behavior of ProFTPD, but all the needed scripts to have it run by systemd instead are included.

Security Fix(es):

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.(CVE-2026-44331)

Record
OESA-2026-2265
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2026-2266 8.1

proftpd security update

ProFTPD is an enhanced FTP server with a focus toward simplicity, security, and ease of configuration. It features a very Apache-like configuration syntax, and a highly customizable server infrastructure, including support for multiple 'virtual' FTP servers, anonymous FTP, and permission-based directory visibility. This package defaults to the standalone behavior of ProFTPD, but all the needed scripts to have it run by systemd instead are included.

Security Fix(es):

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).(CVE-2026-42167)

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.(CVE-2026-44331)

Record
OESA-2026-2266
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2026-2267 8.1

proftpd security update

ProFTPD is an enhanced FTP server with a focus toward simplicity, security, and ease of configuration. It features a very Apache-like configuration syntax, and a highly customizable server infrastructure, including support for multiple 'virtual' FTP servers, anonymous FTP, and permission-based directory visibility. This package defaults to the standalone behavior of ProFTPD, but all the needed scripts to have it run by systemd instead are included.

Security Fix(es):

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.(CVE-2026-44331)

Record
OESA-2026-2267
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2026-2268 8.1

proftpd security update

ProFTPD is an enhanced FTP server with a focus toward simplicity, security, and ease of configuration. It features a very Apache-like configuration syntax, and a highly customizable server infrastructure, including support for multiple 'virtual' FTP servers, anonymous FTP, and permission-based directory visibility. This package defaults to the standalone behavior of ProFTPD, but all the needed scripts to have it run by systemd instead are included.

Security Fix(es):

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.(CVE-2026-44331)

Record
OESA-2026-2268
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-44331 8.1

In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.

Record
UBUNTU-CVE-2026-44331
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2026-0200 No score

Updated proftpd packages fix security vulnerabilities

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 %U, and the SQL backend allows commands (e.g., COPY TO PROGRAM). CVE-2026-44331 a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect

Record
MGASA-2026-0200
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
proftpd
Alpine:v3.22
 before 1.3.9b-r0
1.3.9b-r0
proftpd-dfsg
Debian:12
 All versions, plus listed versions
1.3.8+dfsg-41.3.8+dfsg-4+deb12u11.3.8+dfsg-4+deb12u21.3.8+dfsg-4+deb12u31.3.8+dfsg-4+deb12u4
Show 23 moreShow less
1.3.8+dfsg-4+deb12u51.3.8+dfsg-51.3.8+dfsg-61.3.8+dfsg-71.3.8+dfsg-81.3.8.a+dfsg-11.3.8.b+dfsg-11.3.8.b+dfsg-21.3.8.b+dfsg-31.3.8.b+dfsg-41.3.8.c+dfsg-11.3.8.c+dfsg-21.3.8.c+dfsg-31.3.8.c+dfsg-41.3.9a~dfsg-11.3.9b~dfsg-11.3.9c~dfsg-11.3.9d~dfsg-11.3.9~dfsg-11.3.9~dfsg-21.3.9~dfsg-31.3.9~dfsg-41.3.9~dfsg-5
 None known
proftpd-dfsg
Debian:13
 before 1.3.8.c+dfsg-4+deb13u3, plus listed versions
1.3.8.c+dfsg-41.3.8.c+dfsg-4+deb13u11.3.8.c+dfsg-4+deb13u2
1.3.8.c+dfsg-4+deb13u3
proftpd-dfsg
Debian:14
 before 1.3.9a~dfsg-1, plus listed versions
1.3.8.c+dfsg-41.3.9~dfsg-11.3.9~dfsg-21.3.9~dfsg-31.3.9~dfsg-41.3.9~dfsg-5
1.3.9a~dfsg-1
proftpd
Mageia:9
From an advisory covering 2 CVEs
 before 1.3.8c-1.2.mga9
1.3.8c-1.2.mga9
proftpd
openEuler:22.03-LTS-SP4
From an advisory covering 2 CVEs
 before 1.3.9a-2.oe2203sp4
1.3.9a-2.oe2203sp4
proftpd
openEuler:24.03-LTS
 before 1.3.9a-2.oe2403
1.3.9a-2.oe2403
proftpd
openEuler:24.03-LTS-SP1
From an advisory covering 2 CVEs
 before 1.3.9a-2.oe2403sp1
1.3.9a-2.oe2403sp1
proftpd
openEuler:24.03-LTS-SP3
 before 1.3.9a-2.oe2403sp3
1.3.9a-2.oe2403sp3
proftpd
openEuler:20.03-LTS-SP4
 before 1.3.8b-5.oe2003sp4
1.3.8b-5.oe2003sp4
Show 8 moreShow less
Affected packages
PackageAffectedFixed
proftpd-dfsg
Ubuntu:16.04:LTS
 All versions, plus listed versions
1.3.5-21.3.5a-11.3.5a-1build11.3.5a-1ubuntu0.1
 None known
proftpd-dfsg
Ubuntu:18.04:LTS
 All versions, plus listed versions
1.3.5d-11.3.5e-1build1
 None known
proftpd-dfsg
Ubuntu:20.04:LTS
 All versions, plus listed versions
1.3.6-6build21.3.6c-11.3.6c-21.3.6c-2ubuntu0.1
 None known
proftpd-dfsg
Ubuntu:22.04:LTS
 All versions, plus listed versions
1.3.7b+dfsg-11.3.7c+dfsg-1build11.3.7c+dfsg-1ubuntu0.1
 None known
proftpd-dfsg
Ubuntu:24.04:LTS
 All versions, plus listed versions
1.3.8+dfsg-81.3.8.a+dfsg-11.3.8.b+dfsg-11.3.8.b+dfsg-1build11.3.8.b+dfsg-1build21.3.8.b+dfsg-1build31.3.8.b+dfsg-1ubuntu0.1
 None known
proftpd-dfsg
Ubuntu:25.10
 All versions, plus listed versions
1.3.8.c+dfsg-21.3.8.c+dfsg-41.3.9~dfsg-3
 None known
proftpd-dfsg
Ubuntu:26.10
 All versions, plus listed versions
1.3.9~dfsg-41.3.9b~dfsg-11.3.9d~dfsg-1
 None known
proftpd-dfsg
Ubuntu:26.04:LTS
 All versions, plus listed versions
1.3.9~dfsg-31.3.9~dfsg-4
 None known

History

History
RecordedChangedSources
affected, facts
affectedOSV
affected, aliases, referencesOSV
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-44331 is a high vulnerability (CVSS 8.1) in Proftpd, published May 5, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 39th percentile. Fixed in proftpd 1.3.9b-r0.

References

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