CVE-2019-7928
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 · uneditedA denial-of-service (DoS) vulnerability exists in Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2. By abusing insufficient brute-forcing defenses in the token exchange protocol, an unauthenticated attacker could disrupt transactions between the Magento merchant and PayPal.
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 confidenceA denial-of-service vulnerability exists in Magento 2's PayPal token exchange protocol due to insufficient brute-forcing defenses. An unauthenticated attacker can abuse this to disrupt transactions between Magento merchants and PayPal by overwhelming or manipulating the token exchange process.
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>= 2.1.0, < 2.1.18>= 2.2.0, < 2.2.9>= 2.3.0, < 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
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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 your Magento 2 installed versionRun 'php bin/magento --version' from your Magento installation directory, or check the 'magento/version' file in your installation root, or view composer.json for the 'magento/product-community-edition' version entryAffected if The version falls within < 2.1.18, < 2.2.9, or < 2.3.2 for their respective major branches (2.1.x, 2.2.x, 2.3.x)
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Verify PayPal payment methods are configuredLog into the Magento Admin Panel, navigate to Stores > Configuration > Payment Methods, and check if any PayPal payment methods (PayPal Express Checkout, PayPal Payments Pro, etc.) are enabledAffected if PayPal payment methods are enabled and the Magento version is in the affected range
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Inspect PayPal integration configuration filesCheck the file app/etc/config.php for the payment module status, specifically looking for 'payment/paypal/*' entries, or review the database table 'core_config_data' where path like 'payment/paypal%'Affected if PayPal configuration entries exist and are set to enabled (value = 1) while the Magento version is vulnerable
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Review access logs for token exchange abuseExamine web server access logs for repeated POST requests to PayPal token exchange endpoints (typically /paypal/express/authorize or similar PayPal-related endpoints) from single IP addresses in short time windowsAffected if High volume of unauthenticated requests to PayPal endpoints is observed, especially from external IPs without corresponding successful transactions
You are affected if your Magento 2 installation version is below 2.1.18, 2.2.9, or 2.3.2 (depending on your major version branch) AND you have PayPal payment methods enabled in your Magento configuration.
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 data2.1.182.2.92.3.2
Upgrade Magento to version 2.1.18, 2.2.9, or 2.3.2 or later. Additionally, implement rate limiting on PayPal integration endpoints and consider a web application firewall to mitigate automated attacks.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-7928 — 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-2019-7928 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
- No spam, self-promotion, credentials, or personal data