CVE-2020-25733
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 · uneditedwebTareas through 2.1 allows upload of the dangerous .exe and .shtml file types.
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 confidencewebTareas through version 2.1 fails to properly restrict file upload types, permitting dangerous .exe (executable) and .s.shtml (server-side include) files to be uploaded. This can enable attackers to upload malicious scripts that may lead to remote code execution.
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<= 2.1CVSS 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
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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 if webTareas is installedLocate webTareas application files in your web server document root or application directory. Look for directories or files associated with the webTareas application.Affected if webTareas is present on the system
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Determine the installed webTareas versionCheck the webTareas version number, typically found in a version file, README, or in the application footer/meta tags. Compare against the affected range: versions <= 2.1Affected if The installed version is 2.1 or lower
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Locate the file upload functionalityIdentify the file upload feature in webTareas - typically accessible through task creation, project attachments, or document management sections of the application.Affected if File upload functionality exists and is accessible to users
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Verify if dangerous file types are blockedAttempt to upload or inspect the upload validation logic for .exe and .s.shtml file extensions. Check if the application rejects these extensions or if they can be uploaded.Affected if The application allows uploading of .exe, .s.shtml, or other executable/interpretable file types without proper validation
You are affected if webTareas version 2.1 or lower is installed and the file upload feature permits dangerous extensions like .exe or .s.shtml to be uploaded.
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 on the server side, rejecting .exe, .shtml, and other executable/interpretable file extensions. Additionally, configure the web server to prevent execution of uploaded files.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-25733 — 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-2020-25733 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