CVE-2026-23942
Essential information
- Published
- 13/03/2026 19:54
- Modified
- 13/03/2026 19:54
- Author
- —
- Creator
- —
- CVSS
- 5.3 MEDIUM (v3) 5.3 MEDIUM (v4.0)
- CISA KEV
- No
- CWE
- —
- CVSS vector
-
—
—
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS metrics
- Access vector
- —
- Access complexity
- —
- Authentication
- —
- Confidentiality impact
- —
- Integrity impact
- —
- Availability impact
- —
- Exploitability
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- —
- Attack complexity
- —
- Privileges required
- —
- User interaction
- —
- Scope
- —
- Confidentiality impact
- —
- Integrity impact
- —
- Availability impact
- —
- Exploit code maturity
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- NETWORK
- Attack complexity
- LOW
- Attack requirements
- NONE
- Privileges required
- LOW
- User interaction
- NONE
- Confidentiality (V)
- LOW
- Confidentiality (S)
- NONE
- Integrity (V)
- LOW
- Integrity (S)
- NONE
- Availability (V)
- NONE
- Availability (S)
- NONE
- Exploit maturity
- NOT_DEFINED
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.
NVD status
- Status
- Received — CVE has been recently published to the CVE List and has been received by the NVD.
- Source
- 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
- NVD
- View on NVD
Affected products (CPE)
| Product | CPE |
|---|---|
| erlang / otp | cpe:2.3:a:erlang:otp:17.0-28.4.1:*:*:*:*:*:*:* |
| erlang / otp | cpe:2.3:a:erlang:otp:27.3.4.9:*:*:*:*:*:*:* |
| erlang / otp | cpe:2.3:a:erlang:otp:26.2.5.18:*:*:*:*:*:*:* |
| erlang / ssh | cpe:2.3:a:erlang:ssh:3.0.1-5.5.1:*:*:*:*:*:*:* |
| erlang / ssh | cpe:2.3:a:erlang:ssh:5.2.11.6:*:*:*:*:*:*:* |
| erlang / ssh | cpe:2.3:a:erlang:ssh:5.1.4.14:*:*:*:*:*:*:* |