CVE-2024-2636
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 · uneditedAn Unrestricted Upload of File vulnerability has been found on Cegid Meta4 HR, that allows an attacker to upload malicios files to the server via '/config/espanol/update_password.jsp' file. Modifying the 'M4_NEW_PASSWORD' parameter, an attacker could store a malicious JSP file inside the file directory, to be executed the the file is loaded in the application.
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 confidenceCegid Meta4 HR allows unrestricted file upload via the /config/espanol/update_password.jsp endpoint. The M4_NEW_PASSWORD parameter accepts arbitrary file content without validation, enabling attackers to upload malicious JSP files that execute when accessed. This is a critical remote code execution vulnerability.
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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:N/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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Confirm Cegid Meta4 HR installationIdentify the installed application by checking HTTP response headers, favicon, or login page for 'Cegid' or 'Meta4 HR' brandingAffected if The application is Cegid Meta4 HR and the vulnerable endpoint is accessible
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Check for vulnerable endpoint existenceAttempt to access the path /config/espanol/update_password.jsp via HTTP request and observe the responseAffected if The endpoint responds (returns 200 or error page rather than 404)
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Verify parameter acceptanceSend a POST request to the endpoint with a test value in the M4_NEW_PASSWORD parameter and observe if it is accepted without validation errorsAffected if The parameter accepts arbitrary input without rejecting it based on content type or extension
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Determine uploaded file web accessibilityInspect the application's upload directory configuration and check if files are stored within the web root and accessible via HTTPAffected if Uploaded files are stored in a web-accessible directory (webroot or subdirectory)
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Check for script execution capabilityVerify if the server configuration allows JSP files to be executed when accessed directly via browser (check web.xml or server configuration)Affected if JSP files in the upload directory are executable when accessed via URL
A user is affected if they run Cegid Meta4 HR with the /config/espanol/update_password.jsp endpoint accessible and the application stores uploaded files in a web-executable location.
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 server-side validation of file extensions and MIME types, store uploaded files outside the webroot or in non-executable directories, and disable script execution in upload directories. Consider renaming uploaded files and using a whitelist approach.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2024-2636 — 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-2024-2636 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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