SQL Injection Affecting proftpd-dfsg package, versions <1.3.8+dfsg-4+deb12u5
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published30 Apr 2026
- disclosed28 Apr 2026
Introduced: 28 Apr 2026
CVE-2026-42167 (opens in a new tab)How to fix?
Upgrade Debian:12 proftpd-dfsg to version 1.3.8+dfsg-4+deb12u5 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream proftpd-dfsg package and not the proftpd-dfsg package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
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).
References
- https://security-tracker.debian.org/tracker/CVE-2026-42167
- http://www.proftpd.org/docs/RELEASE_NOTES-1.3.10rc1
- https://github.com/proftpd/proftpd/issues/2052
- https://www.openwall.com/lists/oss-security/2026/05/01/4
- https://zeropath.com/blog/proftpd-cve-2026-42167-auth-bypass-privesc-rce
- http://www.openwall.com/lists/oss-security/2026/05/01/13
- http://www.openwall.com/lists/oss-security/2026/05/01/4
- https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-poc
- https://github.com/projectdiscovery/nuclei-templates/blob/main/network/cves/2026/CVE-2026-42167.yaml
- https://www.exploit-db.com/exploits/52658