CVE-2026-119364
ProFTPD through 1.3.9e and 1.3.10rc4 mod_copy Symlink Following Write Bypass
- State
- Published
- Severity
- 6.0 Medium
- Published
- Oct 30, 2026
- Updated
- Oct 30, 2026
- Reserved
- Oct 30, 2026
Description
ProFTPD through 1.3.9e and 1.3.10rc1 through 1.3.10rc4 contains a link-following vulnerability in mod_copy that allows authenticated FTP users to bypass Limit WRITE restrictions via symlinks. Attackers can place a symlink in a writable directory and use SITE COPY or SITE CPTO to overwrite files in write-denied locations.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.0 Medium | CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N | VulnCheck |
Weaknesses
- CWE-59 Improper Link Resolution Before File Access ('Link Following')
Affected Products
| Product | Versions |
|---|---|
ProFTPDProFTPD Project |
|
References
- https://github.com/proftpd/proftpd/issues/2374issue-tracking
- https://github.com/proftpd/proftpd/commit/c41691f8981f98081fcb8a535c3c21b06a3f04afpatch
- https://github.com/proftpd/proftpd/blob/v1.3.9e/contrib/mod_copy.c#L620technical-description
- ProFTPD v1.3.10rc5 Release Notesrelease-notes
- https://abraxaslabs.tech/research/proftpd-site-copy-dest-followthird-party-advisory
- https://github.com/proftpd/proftpdproduct
- VulnCheck Advisory: ProFTPD through 1.3.9e and 1.3.10rc4 mod_copy Symlink Following Write Bypassthird-party-advisory
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