Incorrect Privilege AssignmentWeakness · CWE-266

CVE-2026-5642

HIGH · 7.3 CVSS v3.1 Published 2026-04-06
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
82/100
Remediation priority · High
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 was determined in Cyber-III Student-Management-System up to 1a938fa61e9f735078e9b291d2e6215b4942af3f. This affects an unknown function of the file /viva/update.php of the component HTTP POST Request Handler. This manipulation of the argument Name causes improper authorization. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.

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

A broken access control vulnerability exists in the Cyber-III Student-Management-System's /viva/update.php endpoint. The HTTP POST Request Handler fails to properly authorize operations when processing the 'Name' parameter, allowing unauthorized modifications remotely. This is a classic IDOR or privilege escalation issue in the update functionality.

MitigationImplement proper authorization checks in update.php to verify the user has rights to modify the requested 'Name' data. Until a patch is available, restrict access to this endpoint via network-level controls or deploy a WAF rule to block unauthorized update requests.

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

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
Low
Integrity
Low
Availability
Low

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

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. Confirm Cyber-III Student Management System is present
    Search for files or directories named 'Cyber-III', 'student', or 'viva' in the web root. Look for application banners or login pages identifying this system.
    Affected if The Cyber-III Student-Management-System is installed on the server.
  2. Verify /viva/update.php endpoint exists
    Check the web server document root for the path /viva/update.php or attempt a HEAD/GET request to the endpoint if accessible.
    Affected if The file /viva/update.php exists in the deployed application.
  3. Test if update.php accepts unauthenticated or unauthorized POST requests
    Send an HTTP POST request to /viva/update.php with the 'Name' parameter (e.g., Name=test) without providing valid session credentials or authorization tokens. Observe if the server processes the request.
    Affected if The endpoint processes the POST request and returns a success response without requiring valid authentication or authorization.
  4. Inspect session and authorization logic in update.php
    Review the PHP source code of /viva/update.php to check if session validation, role checks, or ownership verification occur before processing the 'Name' parameter update.
    Affected if The code lacks proper authorization checks before allowing modification via the Name parameter.

A user is affected if the Cyber-III Student-Management-System is deployed and the /viva/update.php endpoint processes Name parameter modifications without verifying user authorization.

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 authorization checks in update.php to verify the user has rights to modify the requested 'Name' data. Until a patch is available, restrict access to this endpoint via network-level controls or deploy a WAF rule to block unauthorized update requests.

Have this fixed Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,490
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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-2026-5642 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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