CVE-2026-32108Network attack vector

Sibling-file disclosure via unchecked FTP/SFTP path translation

Published Mar 11, 2026 · Updated Mar 11, 2026

Incorrect authorization in copyparty before 1.20.12 allows remote authenticated users to read sibling files through public FTP or SFTP shares. FTP and SFTP path translation joined an attacker-supplied remainder directly to the share's real path instead of routing it through VFS.canonical, so the shr_files allowlist was not enforced. The issue requires a publicly reachable FTP or SFTP server and a single-file share; guessed filenames expose only sibling files, not subdirectories.

CVSS severity2.3
Low
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in copyparty before 1.20.12 allows remote authenticated users to read sibling files through public FTP or SFTP shares. FTP and SFTP path translation joined an attacker-supplied remainder directly to the share's real path instead of routing it through VFS.canonical, so the shr_files allowlist was not enforced. The issue requires a publicly reachable FTP or SFTP server and a single-file share; guessed filenames expose only sibling files, not subdirectories.

The record

CVE
CVE-2026-32108
Published
Mar 11, 2026
Updated
Mar 11, 2026
Vendor
copyparty
Product
copyparty
Classifications
CWE-863, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 11, 2026Record 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=< 1.20.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

copyparty · copypartyversion=< 1.20.12

Published CVSS scores

2.3GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-863Incorrect Authorization
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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