CVE-2025-3687Public exploitNetwork attack vector

Unauthorized note creation via missing CSRF validation

Published Apr 16, 2025 · Updated Apr 16, 2025

Cross-site request forgery in Felix Luo oasys 1.0 allows remote attackers to add sticky notes through an authenticated user's browser. The Sticky Notes handler accepts a state-changing note-add request without verifying that the authenticated user intentionally originated it. Exploitation requires an authenticated user to access an attacker-constructed page, and the demonstrated consequence is creating a sticky note under that user's account.

CVSS severity5.3
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in Felix Luo oasys 1.0 allows remote attackers to add sticky notes through an authenticated user's browser. The Sticky Notes handler accepts a state-changing note-add request without verifying that the authenticated user intentionally originated it. Exploitation requires an authenticated user to access an attacker-constructed page, and the demonstrated consequence is creating a sticky note under that user's account.

The record

CVE
CVE-2025-3687
Published
Apr 16, 2025
Updated
Apr 16, 2025
Vendor
Felix Luo
Product
oasys
Classifications
CWE-862, CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

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 privilegesunauthenticated

What is affected?

Felix Luo · oasysversion=1.0

Published CVSS scores

5.0VulDBAV:N/AC:L/Au:N/C:N/I:P/A:N
5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
4.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
CWE-352Cross-Site Request Forgery (CSRF)
T1204.001User Execution: Malicious Link

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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