CVE-2025-59113
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 · uneditedWindu CMS implements weak client-side brute-force protection by using parameter loginError. Information about attempt count or timeout is not stored on the server, which allows a malicious attacker to bypass this brute-force protection by resetting this parameter. Only version 4.1 was tested and confirmed as vulnerable. This issue was fixed in version 4.1 build 2250.
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 · high confidenceWindu CMS 4.1 implements brute-force protection only client-side via the loginError parameter without server-side tracking of failed attempts or lockout timers. An attacker can bypass this by resetting the loginError parameter on each login attempt, enabling unlimited brute-force attacks against the authentication mechanism.
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= 4.1CVSS 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
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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 checksWork through these to decide whether this CVE applies to you.
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Confirm Windu CMS installationIdentify the installed version of Windu CMS by accessing the admin dashboard About section, or checking the version file in the CMS installation directoryAffected if The installed version is Windu CMS 4.1 (exactly version 4.1)
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Locate the login form sourceExamine the login form HTML in the user authentication page (typically found in templates or view files related to login)Affected if The login form contains a loginError parameter or variable used for tracking failed attempts client-side only
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Check server-side login handlingReview the server-side authentication code that processes login submissions to determine if it tracks failed attempt counts server-sideAffected if No server-side session or database tracking of login attempt counts exists, or failed attempts are tracked only via client-side parameters
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Test parameter reset behaviorSubmit multiple failed login attempts while resetting or omitting the loginError parameter on each requestAffected if The system allows unlimited login attempts without triggering any lockout or rate limiting when the loginError parameter is modified or omitted
You are affected if you are running exactly Windu CMS 4.1 and the login mechanism relies solely on client-side parameters (loginError) for brute-force protection without server-side attempt tracking.
Generated from the published advisory. Verify against your own configuration.
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.
dbcve · scopedUpgrade to Windu CMS version 4.1 build 2250 or later, which implements proper server-side brute-force protection with attempt counting and account lockout.
Windu CMS 4.1 build 2250
- 1. Backup the current Windu CMS installation including all files and the database
- 2. Download Windu CMS version 4.1 build 2250 from the official source (windu.org)
- 3. Upgrade the existing Windu CMS 4.1 installation to build 2250 following the standard upgrade procedure
- 4. Verify the upgrade was successful by logging in and confirming the version number
- 5. Test that brute-force protection now properly tracks attempts server-side and blocks after configured threshold
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-59113 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-59113 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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