CVE-2017-1000160
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 · uneditedEllisLab ExpressionEngine 3.4.2 is vulnerable to cross-site scripting resulting in PHP code injection
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 confidenceEllisLab ExpressionEngine 3.4.2 contains a cross-site scripting vulnerability that can be leveraged to achieve PHP code injection. This stored or reflected XSS allows attackers to inject malicious scripts that interact with the application's PHP execution logic, potentially leading to remote code execution.
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= 3.4.2CVSS 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
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:L/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 ExpressionEngine versionAccess the admin control panel and navigate to Overview or Settings to view the installed version, or check the system/expressionengine/config/config.php file for version informationAffected if The installed version is 3.4.2 exactly
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Confirm ExpressionEngine is activeVerify the ExpressionEngine application is currently running and accessible via web browser or APIAffected if The application is running and accessible to users
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Check for user-controllable input fieldsReview the application for user-generated content features such as comments, forums, channel fields, or member profiles where input is stored and displayedAffected if User-controllable input fields exist that could store or reflect content
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Inspect application logs for XSS indicatorsReview ExpressionEngine logs in the system/ee/EllisLab/ExpressionEngine/Log directory for suspicious script injection patterns in request parametersAffected if Logs show attempted or successful script injection in user input fields
You are affected if ExpressionEngine version 3.4.2 is installed and the application handles user-supplied input that could be stored or reflected back to users without proper 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 dataUpdate ExpressionEngine to the latest version that patches this vulnerability. Additionally, implement proper input sanitization and output encoding across all user-controllable fields to prevent XSS exploitation.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-1000160 — 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-2017-1000160 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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