CVE-2019-8233
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 · uneditedIn Magento 2.2 prior to 2.2.10, Magento 2.3 prior to 2.3.3 or 2.3.2-p1, an unauthenticated user can inject arbitrary JavaScript code as a result of the sanitization engine ignoring HTML comments.
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 confidenceThis is a stored Cross-Site Scripting (XSS) vulnerability in Magento 2.2 and 2.3 where the input sanitization engine fails to properly process HTML comments. An unauthenticated attacker can inject malicious JavaScript code by embedding it within HTML comments that bypass the sanitization filter, allowing arbitrary script execution in the browsers of users who view the injected content.
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>= 2.2.0, < 2.2.10>= 2.3.0, < 2.3.2= 2.3.2CVSS 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
- 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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Determine installed Magento version via CLIRun `php bin/magento --version` or `composer show magento/product-community-edition 2>/dev/null | grep version` in the Magento root directoryAffected if The version output falls within >= 2.2.0 and < 2.2.10, OR >= 2.3.0 and <= 2.3.2 (including 2.3.2 itself)
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Verify version from composer.jsonInspect the `composer.json` file in the Magento root and look for the version entry under `require` -> `magento/product-community-edition`Affected if The version specified matches the affected ranges above
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Check if security patch SUPEE-10706 or equivalent was appliedLook for the patch file or check the codebase for changes related to HTML comment sanitization in the vendor or app directory, or check the Magento admin panel under System -> Web Setup Wizard -> Component Manager for applied security patchesAffected if No security patch addressing this XSS issue has been applied to the installation
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Confirm via Magento Admin PanelLog into the Magento admin panel and navigate to System -> Support or System -> Configuration -> Advanced -> Advanced to view the installed version informationAffected if The displayed version is within the affected ranges (2.2.0-2.2.9 or 2.3.0-2.3.2)
You are affected if your installed Magento version is 2.2.0 through 2.2.9, or 2.3.0 through 2.3.2, and no security patch for CVE-2019-8233 has been applied.
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 data2.2.102.3.2
Apply the vendor patches by updating to Magento 2.2.10, 2.3.3, or 2.3.2-p1 as appropriate for your installation, or apply the equivalent security patch.
- Consultation2.0 h
- Implementation4.0 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 $3,328.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-8233 — 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-2019-8233 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