CVE-2026-2133
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 · uneditedA weakness has been identified in code-projects Online Music Site 1.0. Impacted is an unknown function of the file /Administrator/PHP/AdminUpdateCategory.php. This manipulation of the argument txtimage causes unrestricted upload. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.
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 confidenceUnrestricted file upload vulnerability in Online Music Site 1.0's AdminUpdateCategory.php. The txtimage parameter lacks proper validation, allowing remote attackers to upload malicious files (e.g., PHP web shells) directly to the web server without restrictions on file type, extension, or content.
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= 1.0CVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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 Fabian Online Music Site 1.0 is installedSearch the web server for files or directories indicating the presence of Fabian Online Music Site. Check for application-specific folders, database entries, or configuration files associated with this specific version.Affected if The application is present on the server at any location
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Locate AdminUpdateCategory.phpSearch the web root directory for the file AdminUpdateCategory.php. Use file system search or grep to find this specific PHP file.Affected if AdminUpdateCategory.php exists in the web-accessible directory
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Verify txtimage parameter existsOpen AdminUpdateCategory.php in a text editor or use grep to search for the string 'txtimage' within the file. Confirm this parameter is used in a file upload form.Affected if The txtimage parameter is defined in the file as a file upload input
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Check for file validation logicExamine AdminUpdateCategory.php code around the txtimage parameter for any file type, extension, or MIME type validation functions. Look for functions like mime_content_type, getimagesize, or whitelist arrays.Affected if No whitelist-based validation is present for the uploaded file type or extension
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Confirm upload directory is web-accessibleIdentify the destination directory where uploaded files are stored by examining the move_uploaded_file or similar function calls in AdminUpdateCategory.php. Verify if this directory is within the web root.Affected if Uploaded files are stored in a directory accessible via HTTP/HTTPS
If Fabian Online Music Site 1.0 is running with AdminUpdateCategory.php present and the txtimage parameter lacks proper file validation, the system is vulnerable to unrestricted file upload attacks.
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 validation (extension, MIME type, magic bytes), store uploaded files outside the web root or rename them to non-executable extensions, and add web server configuration rules to prevent script execution in upload directories.
- 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-2026-2133 — 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-2026-2133 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