Description
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Erlang OTP (ssh_sftpd module) allows Path Traversal. This vulnerability is associated with program files lib/ssh/src/ssh_sftpd.erl and program routines ssh_sftpd:is_within_root/2. The SFTP server uses string prefix matching via lists:prefix/2 rather than proper path component validation when checking if a path is within the configured root directory. This allows authenticated users to access sibling directories that share a common name prefix with the configured root directory. For example, if root is set to /home/user1, paths like /home/user10 or /home/user1_backup would incorrectly be considered within the root. This issue affects OTP from OTP 17.0 until OTP 28.4.1, OTP 27.3.4.9 and OTP 26.2.5.18, corresponding to ssh from 3.0.1 until 5.5.1, 5.2.11.6 and 5.1.4.14.
INFO
Published Date :
2026-03-13T09:11:56.424Z
Last Modified :
2026-03-13T09:11:56.424Z
Source :
EEF
AFFECTED PRODUCTS
The following products are affected by CVE-2026-23942 vulnerability.
| Vendors | Products |
|---|---|
| Erlang |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-23942.
