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My SiteApplication · Winterchens

CVE-2025-8838

CRITICAL · 9.8 CVSS v3.1 Published 2025-08-11
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Public exploit Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A vulnerability has been found in WinterChenS my-site up to 1f7525f15934d9d6a278de967f6ec9f1757738d8. This vulnerability affects the function preHandle of the file /admin/ of the component Backend Interface. The manipulation of the argument uri leads to improper authentication. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The code maintainer responded to the issue that "[he] tried it, and using this link automatically redirects to the login page."

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Vulnerability in WinterChenS my-site's Backend Interface where the preHandle function in /admin/ endpoint has improper authentication due to manipulation of the uri argument. The attack allows remote unauthenticated access to admin functions, though the maintainer disputes the exploitability, claiming the URL redirects to login.

MitigationImplement proper authentication checks in the preHandle function for all /admin/ routes, validate the uri argument before processing, and ensure all admin interface access requires valid authentication regardless of URI manipulation.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
My SiteApplication
Affected:= 2025-06-11

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed version
    Check the application version file, build artifact, or runtime version information. For Java/Spring applications, inspect the WAR/JAR file manifest, pom.xml, or version properties file.
    Affected if Version is 2025-06-11 (the only affected version listed)
  2. Confirm application is WinterChenS my-site
    Inspect the application banner, startup logs, or pom.xml/gradle build files for the project name 'WinterChenS' or 'my-site'. The application is Java/Spring-based.
    Affected if Application name matches WinterChenS my-site and is Spring-based
  3. Locate preHandle function in /admin/ endpoint
    Search the application source code for the preHandle method in the controller or interceptor handling the /admin/ URI path. This is typically in a class annotated with @Component or @Configuration implementing HandlerInterceptor.
    Affected if A preHandle method exists for /admin/ route handling URI arguments
  4. Examine URI argument handling in preHandle
    Inspect the preHandle function code to see how the uri/requestURI parameter is processed. Look for logic that may improperly validate or authenticate the request based on URI manipulation.
    Affected if The preHandle function uses the uri argument for access control decisions without proper authentication validation
  5. Test for authentication bypass
    Send HTTP requests to /admin/ endpoints with manipulated URI paths (e.g., /admin/../, /admin/..;, or variations) while NOT providing valid session credentials. Observe if access is granted or if response differs from proper redirect to login.
    Affected if Manipulated URI requests to /admin/ bypass authentication and return admin content or non-login responses instead of redirecting to login

User is affected if running WinterChenS my-site version 2025-06-11 and the /admin/ endpoint preHandle function improperly handles URI arguments allowing unauthenticated access.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper authentication checks in the preHandle function for all /admin/ routes, validate the uri argument before processing, and ensure all admin interface access requires valid authentication regardless of URI manipulation.

Fix this in My Site Scoped from the published advisory
  • Consultation4.0 h
  • Implementation3.0 h
  • Testing3.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,150
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-8838 in production — separate from our analysis above.

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