CVE-2020-14413
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 · uneditedNeDi 1.9C is vulnerable to XSS because of an incorrect implementation of sanitize() in inc/libmisc.php. This function attempts to escape the SCRIPT tag from user-controllable values, but can be easily bypassed, as demonstrated by an onerror attribute of an IMG element as a Devices-Config.php?sta= value.
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 confidenceNeDi 1.9C contains a reflected XSS vulnerability in the sanitize() function within inc/libmisc.php. The function attempts to filter SCRIPT tags from user input but uses flawed logic that can be bypassed using event handlers like onerror on IMG elements via the sta parameter in Devices-Config.php.
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= 1.9cCVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/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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Locate the NeDi installationFind the inc/libmisc.php file in your web server's document root. This file contains the sanitize() function that has the vulnerability.Affected if The file inc/libmisc.php exists in your NeDi installation.
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Confirm the NeDi versionCheck for a version file or examine header/comment sections in NeDi PHP files for the version number 1.9C. Common locations include version.php or the main index.php file.Affected if The installed version is exactly 1.9C.
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Verify the vulnerable sanitize() function existsOpen inc/libmisc.php and locate the sanitize() function. Examine its code to see if it attempts to filter SCRIPT tags using regex pattern matching that can be bypassed.Affected if The sanitize() function in inc/libmisc.php uses flawed regex filtering that can be bypassed with event handlers.
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Check if Devices-Config.php uses the sta parameterLocate Devices-Config.php and verify it accepts a 'sta' parameter and passes it through the sanitize() function for output.Affected if Devices-Config.php exists and uses the 'sta' parameter with the sanitize() function without proper output encoding.
You are affected if you are running NeDi 1.9C with the flawed sanitize() function in inc/libmisc.php and the Devices-Config.php page is accessible to users.
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 dataReplace the flawed sanitize() function with proper output encoding or a vetted HTML sanitization library that handles all event handlers and edge cases, then validate the fix against the documented bypass.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-14413 — 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-2020-14413 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
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