CVE-2019-7886
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 cryptograhic flaw 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. A weak cryptograhic mechanism is used to generate the intialization vector in multiple security relevant contexts.
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 confidenceA cryptographic vulnerability exists in Magento versions 2.1 prior to 2.1.18, 2.2 prior to 2.2.9, and 2.3 prior to 2.3.2 where weak cryptographic mechanisms are used to generate initialization vectors (IVs) in multiple security-relevant encryption contexts. This weakness could allow attackers to potentially recover plaintext data or perform cryptanalytic attacks due to predictable or insufficiently random IVs.
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
- High
- Integrity
- None
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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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Locate the installed Magento version fileCheck the composer.json file in your Magento root directory for the 'version' field, or look for the version.php file in app/etc/Affected if The version field shows a release earlier than 2.1.18, 2.2.9, or 2.3.2
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Verify the exact version numberRun the command 'php bin/magento --version' from your Magento installation directory to obtain the precise version stringAffected if The returned version falls within 2.1.0 to 2.1.17, 2.2.0 to 2.2.8, or 2.3.0 to 2.3.1
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Confirm encryption features are in useCheck if cryptographic functions are actively used by reviewing payment gateway configurations, customer data encryption settings, or session management in your Magento admin panel under Stores > ConfigurationAffected if Any encryption-dependent features such as payment processing, credit card data handling, or sensitive customer information storage are enabled
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Review custom encryption implementationsSearch your codebase for any custom modules that call Magento's encryption or cipher functions (such as openssl_encrypt, mcrypt functions, or Magento's Encryptor interface) to see if they rely on the core IV generationAffected if Custom code or third-party extensions utilize Magento's built-in encryption methods for protecting sensitive data
You are affected if your Magento installation version is 2.1.0-2.1.17, 2.2.0-2.2.8, or 2.3.0-2.3.1 and you use any encryption-dependent functionality such as payment processing or sensitive data storage.
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, 2.3.2 or later to obtain the patched cryptographic implementation. Test all encryption-dependent functionality (payments, customer data, sessions) after applying the update.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-7886 — 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-2019-7886 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