CVE-2020-28898
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 · uneditedIn QED ResourceXpress through 4.9k, a large numeric or alphanumeric value submitted in specific URL parameters causes a server error in script execution due to insufficient input validation.
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 confidenceQED ResourceXpress through version 4.9k fails to properly validate URL parameters, allowing large numeric or alphanumeric values to trigger server execution errors. This insufficient input validation can cause denial of service through error conditions or potentially expose sensitive information through verbose error messages.
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<= 4.9kCVSS 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
- None
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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 ResourceXpress installationLocate the ResourceXpress web application in your environment. Check for the application through your web server's hosted applications list, or look for the product in your software inventory or asset management system.Affected if ResourceXpress is found in your environment and the version is unknown or confirmed to be 4.9k or lower
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Determine installed versionAccess the ResourceXpress admin interface or check application documentation for version information. Common methods include looking at the login page footer, accessing /about or /info endpoints, or reviewing installation files for version markers.Affected if The installed version cannot be determined or is confirmed to be 4.9k or lower
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Verify URL parameter handlingSubmit requests to the ResourceXpress web interface with unusually long numeric or alphanumeric values in URL parameters (e.g., ?id=999999999999999999999999999). Observe whether the application returns verbose error messages, stack traces, or unexpected server errors.Affected if The application returns detailed error messages, stack traces, or experiences errors when processing abnormally long parameter values
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Check for error logging exposureReview server logs and error outputs from the ResourceXpress application. Look for instances where URL parameter processing generates verbose diagnostic information, file paths, or system details in error responses.Affected if Error logs or responses contain sensitive system information, file paths, or detailed exception data triggered by malformed parameter input
You are affected if ResourceXpress version 4.9k or lower is installed and the application exposes verbose errors or fails when processing oversized URL parameter values.
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 input validation and bounds checking on all URL parameters, including length limits, type enforcement, and allowlist validation for expected input formats.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 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 $4,480.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-28898 — 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-2020-28898 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