CVE-2023-35887Network attack vector

Authenticated path-existence disclosure via root traversal

Published Jul 10, 2023 · Updated Oct 7, 2024

Path traversal in Apache MINA SSHD before 2.10 allows remote authenticated users to infer out-of-root path existence through SFTP. RootedFileSystem path handling resolves parent-navigation and symlink paths beyond its configured root, returning distinguishable exists or does-not-exist results. An SFTP login and a server configured with RootedFileSystem are required; the oracle reveals only whether targeted external entries exist.

CVSS severity5.0
Medium
EPSS probability1.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Apache MINA SSHD before 2.10 allows remote authenticated users to infer out-of-root path existence through SFTP. RootedFileSystem path handling resolves parent-navigation and symlink paths beyond its configured root, returning distinguishable exists or does-not-exist results. An SFTP login and a server configured with RootedFileSystem are required; the oracle reveals only whether targeted external entries exist.

The record

CVE
CVE-2023-35887
Published
Jul 10, 2023
Updated
Oct 7, 2024
Vendor
The Apache Software Foundation
Product
Apache MINA SSHD
Classifications
CWE-200, CWE-22, T1083
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0 <2.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache MINA SSHDversion=1.0 <2.10

Published CVSS scores

5.0Apache Software FoundationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1083File and Directory Discovery

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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