PT-2026-51789 · Proftpd · Proftpd

Djnn + 1 · Publicado 2026-06-24 · Atualizado 2026-06-24 · CVE-2026-35025

NVD

CVSS v3.1

8.1

Alta

Vetor base

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

ProFTPD through 1.3.9b and 1.3.10rc2 contains an access control bypass vulnerability that allows authenticated FTP users to circumvent Directory ACL restrictions by prefixing paths with /proc/self/root in the RNFR command handler. Attackers can exploit the unresolved symlink components in dir canonical path() to cause dir check() to perform lexical path comparisons that match no configured Directory block, enabling rename operations on files in DenyAll-protected directories and subsequent retrieval of those files. Mitigation: Sessions configured with DefaultRoot (chroot) are not affected, as chroot changes the directory to which /proc/self/root resolves.

Correção

Link Following

Enumeração de Fraquezas

CWE-59

Identificadores relacionados

CVE-2026-35025

Produtos afetados

Proftpd

Referências · 4

• https://github.com/proftpd/proftpd/issues/2170 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-35025 · Nota de Segurança
• https://vulncheck.com/advisories/proftpd-acl-bypass-via-proc-self-root-path-prefix-in-rnfr · Nota
• http://proftpd.org · Nota