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CVE-2026-35025

HIGH
8.1
CVSS 3.1
Description
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.

Metadata

CVE ID
CVE-2026-35025
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-03-31 20:40 UTC
Published
2026-06-24 13:21 UTC
Last updated
2026-06-24 13:21 UTC
Primary CWE
CWE-59
Improper Link Resolution Before File Access ('Link Following…
Vendor / Product
ProFTPD Project / ProFTPD
Sources
cve.org  ·  NVD

Severity & Metrics

8.1 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Affected products (1)
VendorProductPlatformVersions
ProFTPD Project ProFTPD — 0 ≤ 1.3.9b, 0 ≤ 1.3.10rc2
Weakness (CWE)
CWESourceDescription
CWE-59 cna Improper Link Resolution Before File Access ('Link Following')
CVSS scores (2)
ScoreSeverityVersionSourceVector
8.6 HIGH 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 HIGH 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
References (3)
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