CVE-2023-42362
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 arbitrary file upload vulnerability in Teller Web App v.4.4.0 allows a remote attacker to execute arbitrary commands and obtain sensitive information via uploading a crafted file.
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 confidenceArbitrary file upload vulnerability in Teller Web App v4.4.0 allows remote attackers to upload crafted files that can be executed for arbitrary command execution and sensitive information disclosure. The vulnerability likely stems from insufficient file type validation, improper storage configuration, or lack of sanitization of uploaded filenames.
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= 4.4.0CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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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Identify the installed Teller Web App versionLocate the application version information in the software itself, configuration files, or deployment metadata (check version headers, about pages, or package manifests where the application stores its version identifier)Affected if The installed version is exactly 4.4.0
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Verify if file upload functionality existsLocate and examine the file upload module or endpoint in the Teller Web App - check for upload forms, API endpoints, or administrative interfaces that handle file uploadsAffected if File upload functionality is present and accessible to remote users
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Determine upload storage locationExamine the application configuration or runtime settings to identify where uploaded files are stored on the filesystemAffected if Uploaded files are stored within the web server's document root or web-accessible directory
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Check script execution permissions on upload directoryInspect the web server configuration (such as .htaccess, nginx config, or application settings) for the upload directory to determine if script execution is permittedAffected if Script execution is allowed in the directory where uploaded files are stored
A user is affected if they have Teller Web App version 4.4.0 running with the file upload feature accessible and uploads stored in a web-accessible location with script execution enabled.
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, store uploads outside the web root with randomized filenames, disable script execution in upload directories, and validate file content (magic bytes) rather than relying solely on extensions or MIME types.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-42362 — 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-2023-42362 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