Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ProFTPD | ProFTPD | ≤ 1.3.9a | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | proftpd-dfsg | 1.3.9a~dfsg-1 | — |
| Debian 13 | proftpd-dfsg | 1.3.8.c+dfsg-4+deb13u3 | — |
| Debian 12 | proftpd-dfsg | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | proftpd-dfsg | No fix yet | — |
| Ubuntu 26.04 LTS | proftpd-dfsg | No fix yet | — |
| Ubuntu 25.10 | proftpd-dfsg | No fix yet | — |
| Ubuntu 24.04 LTS | proftpd-dfsg | No fix yet | — |
| Ubuntu 22.04 LTS | proftpd-dfsg | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | proftpd-dfsg | No fix yet | — |
| Ubuntu 18.04 LTS | proftpd-dfsg | No fix yet | — |
| Ubuntu 16.04 LTS | proftpd-dfsg | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | proftpd | 1.3.8b-150600.13.18.1 | SUSE-SU-2026:5181-1 |
| SLES 15 SP6 | proftpd | 1.3.8b-150600.13.18.1 | SUSE-SU-2026:5181-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP6 | proftpd | 1.3.8b-150600.13.18.1 | SUSE-SU-2026:5181-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | proftpd | 1.3.9e-2.1 | openSUSE-SU-2026:12517-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | proftpd | 1.3.9b-r0 | — |
| Alpine v3.23 | proftpd | 1.3.9b-r0 | — |
| Alpine v3.22 | proftpd | 1.3.9b-r0 | — |
Advisories 3
- openSUSE-SU-2026:12517-1 proftpd-1.3.9e-2.1 on GA media SUSE / openSUSE Security Updates · Nov 11, 2026
- SUSE-SU-2026:5181-1 Security update for proftpd SUSE / openSUSE Security Updates · Nov 11, 2026
- WID-SEC-2026-1363 ProFTPD: Schwachstelle ermöglicht SQL-Injection BSI CERT-Bund (WID) · Nov 10, 2026