CVE-2020-9580
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 · uneditedMagento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have a security mitigation bypass vulnerability. Successful exploitation could lead to arbitrary code execution.
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 critical security mitigation bypass vulnerability in Magento e-commerce platforms affecting versions 2.3.4 and earlier, 2.2.11 and earlier, 1.14.4.4 and earlier, and 1.9.4.4 and earlier. The vulnerability allows attackers to bypass existing security mitigations and achieve arbitrary code execution on the affected system.
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<= 1.9.4.4<= 1.14.4.4>= 2.2.0, <= 2.2.11>= 2.3.0, <= 2.3.4CVSS 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
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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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Identify Magento installation versionFor Magento 2.x, run 'php bin/magento --version' from the web root or check the version in composer.json. For Magento 1.x, check the version file in the installation directory or admin panel.Affected if The installed version falls within these ranges: Magento 1.x <= 1.14.4.4 or <= 1.9.4.4; Magento 2.2.x <= 2.2.11; Magento 2.3.x <= 2.3.4
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Confirm the exact minor version numberReview the full version string returned, for example 2.3.4 or 1.14.4.4, to determine if it matches or precedes the known affected versions.Affected if The version is 2.3.4 or earlier for the 2.3 branch, 2.2.11 or earlier for the 2.2 branch, 1.14.4.4 or earlier for the 1.14 branch, or 1.9.4.4 or earlier for the 1.9 branch
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Verify if the environment is running a patched releaseCompare your installed version against the patched releases: Magento 2.3.5+, 2.2.12+, 1.14.4.5+, or 1.9.4.5+.Affected if The installed version is lower than these patched releases and falls within the affected version ranges listed above
You are affected if your Magento installation version is 2.3.4 or earlier, 2.2.11 or earlier, 1.14.4.4 or earlier, or 1.9.4.4 or earlier.
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 dataApply the official Magento security patches or upgrade to the patched versions (Magento 2.3.5+, 2.2.12+, 1.14.4.5+, 1.9.4.5+) to remediate this vulnerability. Given the CVSS 9.8 rating, this should be prioritized as an emergency fix.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-9580 — 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-2020-9580 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