CVE-2025-13261Public exploitNetwork attack vector

Unauthenticated file read via unvalidated version parameter

Published Nov 17, 2025 · Updated Nov 17, 2025

Path traversal in lsFusion Platform 6.1 and earlier allows remote attackers to read arbitrary server files through an unauthenticated endpoint. DownloadFileRequestHandler accepts the version parameter without validation when /file/static/noauth has no trailing path, then appends it directly to FileUtils.APP_DOWNLOAD_FOLDER_PATH. No authentication or user interaction is required, and successful traversal discloses files readable by the web-client process without changing or interrupting the service.

CVSS severity5.3
Medium
EPSS probability0.70%
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 lsFusion Platform 6.1 and earlier allows remote attackers to read arbitrary server files through an unauthenticated endpoint. DownloadFileRequestHandler accepts the version parameter without validation when /file/static/noauth has no trailing path, then appends it directly to FileUtils.APP_DOWNLOAD_FOLDER_PATH. No authentication or user interaction is required, and successful traversal discloses files readable by the web-client process without changing or interrupting the service.

The record

CVE
CVE-2025-13261
Published
Nov 17, 2025
Updated
Nov 17, 2025
Vendor
lsFusion
Product
lsFusion Platform
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 17, 2025Record 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=6.0
  2. Affected versionversion=6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

lsFusion · lsFusion Platformversion=6.0; version=6.1

Published CVSS scores

5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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
5.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.0VulDBAV:N/AC:L/Au:N/C:P/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

Public exploit references

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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