CVE-2025-31100
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 · uneditedUnrestricted Upload of File with Dangerous Type vulnerability in Mojoomla School Management allows Upload a Web Shell to a Web Server.This issue affects School Management: from n/a through 1.93.1 (02-07-2025).
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 confidenceThe School Management system has an unrestricted file upload vulnerability that allows authenticated or unauthenticated attackers to upload dangerous file types, specifically web shells, directly to the web server. This leads to remote code execution as the uploaded malicious scripts can be executed by the web server.
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
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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 checksWork through these to decide whether this CVE applies to you.
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Identify School Management system installationSearch web server directories for School Management software components, or check running web applications for 'school' or 'education' related application namesAffected if A School Management application is found and the file upload feature is accessible
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Locate file upload functionalityInspect the application for upload endpoints (typically form fields accepting file input, often in profile, document, or assignment sections)Affected if File upload functionality exists and accepts user-submitted files without validation
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Verify upload endpoint protectionTest access to upload endpoints without authentication, or review authentication configuration for upload routesAffected if Upload endpoint is accessible to unauthenticated users or lacks proper access controls
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Check uploaded file storage locationExamine server configuration or application code to determine where uploaded files are stored (within webroot or outside)Affected if Uploaded files are stored within the webroot directory accessible to the web server
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Confirm script execution is enabled in upload directoryReview web server configuration (Apache .htaccess, Nginx location blocks, IIS handler mappings) to see if script execution is permitted in the upload directoryAffected if The upload directory allows execution of uploaded scripts (PHP, JSP, ASP, etc.)
A School Management system is affected if it has an accessible file upload feature where unauthenticated or authenticated users can upload files that are stored within the webroot in a directory where script execution is permitted, enabling remote code execution.
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.
From vendor dataImplement strict allowlist-based file type validation (MIME type, extension, and file content/magic bytes), store uploaded files outside the webroot or in a non-executable directory with disabled script execution, add authentication/authorization checks to upload endpoints, and consider implementing antivirus scanning for uploaded files.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-31100 — 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-2025-31100 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
- No spam, self-promotion, credentials, or personal data