What is CVE-2026-42167?

CVE-2026-42167 is a high-severity vulnerability in Proftpd, classified under SQL Injection. CVSS score: 8.1/10. Published 2026-04-28.

How severe is CVE-2026-42167?

High severity. CVSS v3 base score is 8.1 out of 10.

Is CVE-2026-42167 known to be exploited?

6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SQL Injection in Proftpd

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 PROGRA…

Vulnerability class: SQL Injection

EPSS: 0.055 (90.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Proftpd — versions 1.3.7b

Weakness classification (CWE)

CWE-89 — SQL Injection

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-42167?: CVE-2026-42167 is a high-severity vulnerability in Proftpd, classified under SQL Injection. CVSS score: 8.1/10. Published 2026-04-28.
How severe is CVE-2026-42167?: High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2026-42167 known to be exploited?: 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.