CVE-2026-35025

Katalog CVE

CVSS 8.1 · High EPSS 0,51%

Kerentanan Improper Link Resolution Before File Access ('Link Following') pada proftpd. Skor CVSS 3.1 8.1 (High) menurut vulncheck.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

24 Juni 2026

Terakhir diubah

14 Juli 2026

Status NVD

Analyzed

CVSS 3.1

8.1 (High), sumber vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-59: Improper Link Resolution Before File Access ('Link Following')

EPSS (30 hari)

0,51% peluang dieksploitasi; lebih tinggi dari 41,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/proftpd/proftpd/issues/2170 issue tracking · mitigasi
• https://www.vulncheck.com/advisories/proftpd-acl-bypass-via-proc-self-root-path-prefix-in-rnfr advisory pihak ketiga
• http://www.proftpd.org/ product · release notes