CVE-2018-20062
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 issue was discovered in NoneCms V1.3. thinkphp/library/think/App.php allows remote attackers to execute arbitrary PHP code via crafted use of the filter parameter, as demonstrated by the s=index/\think\Request/input&filter=phpinfo&data=1 query string.
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 confidenceNoneCms V1.3 contains a critical remote code execution vulnerability in thinkphp/library/think/App.php where the filter parameter in the query string is not properly validated, allowing attackers to pass arbitrary PHP functions (such as phpinfo()) which get executed on the server, leading to full system compromise.
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= 1.3.0CVSS 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 NoneCms versionLocate the version file or header in the NoneCms installation, typically found in a version.php, config file, or the main index fileAffected if The installed version is NoneCms 1.3.0
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Check ThinkPHP library versionExamine the ThinkPHP library bundled with NoneCms, located in thinkphp/library/think/ and check the ThinkPHP core version fileAffected if The ThinkPHP library version corresponds to the vulnerable ThinkPHP releases that allow filter parameter injection
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Verify vulnerable parameter routing is activeTest if the application processes the pattern s=index/think_Request/input&filter=... by sending a harmless test request to the affected endpointAffected if The application accepts and processes the filter parameter without proper sanitization, allowing code execution
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Inspect App.php filter handlingReview thinkphp/library/think/App.php for the input() or filter handling logic that processes user-supplied filter parametersAffected if The code directly passes the filter parameter from user input to PHP functions without validation
You are affected if running NoneCms 1.3.0 with a ThinkPHP version that allows direct injection through the filter parameter in the Request/input method.
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 dataUpgrade NoneCms to a patched version, or implement input validation to whitelist only allowed filter functions and restrict the filter parameter from user-controlled input.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 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 $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-20062 — 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-2018-20062 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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- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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