CVE-2026-42167

CVSS 8.1 HIGHEPSS 5.0%CWE-89

Vexday Risk Score

36Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 8.1EPSS 5.0%KEV nãoPoC —Nuclei simMetasploit —Patch —

Lifecycle

28 Apr 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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).

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

ProFTPD · ProFTPD

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References

https://github.com/proftpd/proftpd/issues/2052 https://github.com/ZeroPathAI/proftpd-CVE-2026-42167-poc 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 http://www.proftpd.org/docs/RELEASE_NOTES-1.3.10rc1