ProFTPd up to 1.3.9a contrib/mod_wrap2_sql.c sqltab_fetch_clients_cb sql injection

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in ProFTPd up to 1.3.9a. It has been rated as critical. This impacts the function sqltab_fetch_clients_cb of the file contrib/mod_wrap2_sql.c. This manipulation causes sql injection. The identification of this vulnerability is CVE-2026-44331. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in ProFTPd up to 1.3.9a. It has been declared as critical. Affected by this vulnerability is the function sqltab_fetch_clients_cb of the file contrib/mod_wrap2_sql.c. The manipulation with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-44331 since 05/05/2026. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1505 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 315980 (Fedora 43 : proftpd (2026-4ddb108952)), which helps to determine the existence of the flaw in a target environment.

Applying the patch 766622456440fbca33abd7927c523673a11d1ed1 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the databases at Tenable (315980), EUVD (EUVD-2026-27484) and CERT Bund (WID-SEC-2026-1363). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Fedora Linux
  • Open Source ProFTPD

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.1
CNA Vector (MITRE): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Sql injection
CWE: CWE-89 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 315980
Nessus Name: Fedora 43 : proftpd (2026-4ddb108952)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 766622456440fbca33abd7927c523673a11d1ed1

Timelineinfo

05/05/2026 Advisory disclosed
05/05/2026 +0 days CVE reserved
05/05/2026 +0 days VulDB entry created
05/21/2026 +16 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 2057
Status: Confirmed

CVE: CVE-2026-44331 (🔒)
GCVE (CVE): GCVE-0-2026-44331
GCVE (VulDB): GCVE-100-361249
EUVD: 🔒
CERT Bund: WID-SEC-2026-1363 - ProFTPD: Schwachstelle ermöglicht SQL-Injection

Entryinfo

Created: 05/05/2026 22:39
Updated: 05/21/2026 09:12
Changes: 05/05/2026 22:39 (67), 05/05/2026 23:08 (1), 05/12/2026 15:04 (7), 05/21/2026 09:12 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!