CVE-2020-5678
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 · uneditedStored cross-site scripting vulnerability in GROWI v3.8.1 and earlier allows remote attackers to inject arbitrary script via unspecified vectors.
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 confidenceStored cross-site scripting (XSS) vulnerability in GROWI v3.8.1 and earlier allows remote attackers to inject arbitrary JavaScript through user-supplied input that is persisted on the server and rendered without proper sanitization.
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<= 3.8.1CVSS 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
- 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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Identify the installed GROWI versionCheck the package.json file in the GROWI installation directory, or run 'npm list growi' from the application root, or access the admin panel and look for version information under System Settings.Affected if The displayed version is 3.8.1 or any earlier version.
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Verify user input functionality is accessibleCheck if user registration and login are enabled, and if the application allows creating or editing pages, posting comments, or adding custom user profile content.Affected if Regular users or unauthenticated users can submit content that gets stored and displayed back to other users.
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Inspect how user content is renderedExamine the application logs or HTML source when user-submitted content is displayed. Look for evidence that HTML entities are being escaped or if raw HTML is being rendered.Affected if User-supplied content renders as raw HTML or allows script tag execution without output encoding.
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Test for XSS in available input fieldsSubmit a benign test payload like '<script>alert(1)</script>' in available input fields (page creation, comments, user profiles) and then view that content to see if the script executes.Affected if The payload executes JavaScript when the content is viewed by another user, indicating the stored XSS vulnerability is present.
Your environment is affected if GROWI version 3.8.1 or earlier is installed and user-generated content can be submitted and displayed without sanitization.
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 GROWI to a version newer than v3.8.1 and implement output encoding/validation on all user input fields to prevent script execution.
- 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-2020-5678 — 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-2020-5678 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
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