CVE-2018-18886
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 · uneditedHelpy v2.1.0 has Stored XSS via the Ticket title.
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 confidenceHelpy v2.1.0 contains a stored cross-site scripting (XSS) vulnerability in the Ticket title field. User-supplied input in the ticket title is not properly sanitized before being stored and rendered to other users, allowing execution of arbitrary JavaScript code in the context of other users' browsers.
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< 2.2.0CVSS 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
- 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 Helpy installation and versionLocate the Helpy application files or check the running service. Look for a version identifier in the application source code, Gemfile, or package metadata. Common locations include the root directory version file, config/application.rb, or the running application's about page.Affected if The installed version is below 2.2.0 (e.g., 2.1.0 or earlier)
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Confirm the ticket system is activeDetermine if the Helpy helpdesk/ticketing feature is enabled and accessible. This may involve checking the application configuration, admin settings, or verifying that users can access the ticket creation interface.Affected if The ticket functionality is enabled and accessible to users
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Examine ticket title handlingReview the application code that processes ticket titles, specifically the controller or model that handles ticket creation. Look for the code path that receives and stores the ticket title input.Affected if The ticket title field accepts user input without proper sanitization or output encoding before storage
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Verify stored ticket data renderingCheck the view templates or serializers that render ticket data back to users. Look for how the ticket title is displayed in the ticket list, ticket detail page, or notifications.Affected if The ticket title is rendered to users without context-aware output encoding
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Review application logs for suspicious ticket activitySearch application logs for ticket creation requests with unusual characters in the title field (e.g., <script>, javascript:, onerror=). This may indicate attempted or successful exploitation.Affected if Logs show ticket titles containing XSS payloads or unusual HTML/script tags
You are affected if Helpy version is below 2.2.0 and the ticketing feature is enabled, allowing unsanitized user input in the ticket title to be stored and rendered to other 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 data2.2.0
Implement proper input validation and output encoding for the Ticket title field, using context-aware escaping. Consider adding a Content Security Policy (CSP) header as defense-in-depth.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-18886 — 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-2018-18886 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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