CVE-2026-39620
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 · uneditedCross-Site Request Forgery (CSRF) vulnerability in priyanshumittal Appointment appointment allows Upload a Web Shell to a Web Server.This issue affects Appointment: from n/a through <= 3.5.5.
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 confidenceCross-Site Request Forgery (CSRF) vulnerability in the priyanshumittal Appointment system allows an attacker to trick authenticated administrators into unknowingly uploading a web shell, achieving remote code execution on the 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
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 if the priyanshumittal Appointment application is deployedSearch for application files or check web server directories for an application named 'Appointment' by priyanshumittal. Inspect installed packages or application inventories.Affected if The application is present in the environment
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Locate the file upload functionalityInspect the application's source code or running services for endpoints handling file uploads, typically identified by multipart/form-data forms or file input fields.Affected if File upload functionality exists in the application
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Check for anti-CSRF token implementation on upload endpointsReview the upload endpoint code for presence of anti-CSRF tokens (e.g., token validation, SameSite cookies, Origin/Referer header checks) on state-changing requests.Affected if No anti-CSRF protection is implemented on the file upload endpoint
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Inspect server-side file upload validationReview the upload handler code to verify if file type allowlisting, content/magic byte validation, and filename sanitization are performed.Affected if File upload validation is absent or relies only on client-side checks or file extension matching without content verification
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Check where uploaded files are storedExamine the upload handler configuration or file storage directory location relative to the web root (document root).Affected if Uploaded files are stored within the webroot and accessible via HTTP
The environment is affected if the priyanshumittal Appointment application is deployed and the file upload endpoint lacks anti-CSRF protection, has insufficient file validation, or stores uploads in the webroot.
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 anti-CSRF tokens with proper SameSite cookie attributes and origin validation for all state-changing operations; add strict server-side file upload validation including magic byte inspection, whitelist of allowed extensions, and storage outside the web root.
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,960.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-39620 — 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-2026-39620 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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