CVE-2025-3686Public exploitNetwork attack vector

Authenticated arbitrary file read via decoded path traversal

Published Apr 16, 2025 · Updated Apr 16, 2025

Path traversal in the /show image handler in Felix Luo oasys 1.0 allows remote authenticated users to read arbitrary server files. ProcedureController.image URL-decodes the request URI, removes the /show prefix, and passes the remaining path to file input and response output streams without canonicalization or a directory-boundary check. Low-privilege authentication is required; exploitation discloses files readable by the service account, with no reported write or service-interruption impact.

CVSS severity5.3
Medium
EPSS probability0.65%
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 the /show image handler in Felix Luo oasys 1.0 allows remote authenticated users to read arbitrary server files. ProcedureController.image URL-decodes the request URI, removes the /show prefix, and passes the remaining path to file input and response output streams without canonicalization or a directory-boundary check. Low-privilege authentication is required; exploitation discloses files readable by the service account, with no reported write or service-interruption impact.

The record

CVE
CVE-2025-3686
Published
Apr 16, 2025
Updated
Apr 16, 2025
Vendor
Felix Luo
Product
oasys
Classifications
CWE-22, CAPEC-126, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 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=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Felix Luo · oasysversion=1.0

Published CVSS scores

4.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
4.0VulDBAV:N/AC:L/Au:S/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-126Path Traversal
T1005Data from Local System

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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