CVE-2020-5777
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 · uneditedMAGMI versions prior to 0.7.24 are vulnerable to a remote authentication bypass due to allowing default credentials in the event there is a database connection failure. A remote attacker can trigger this connection failure if the Mysql setting max_connections (default 151) is lower than Apache (or another web server) setting MaxRequestWorkers (formerly MaxClients) (default 256). This can be done by sending at least 151 simultaneous requests to the Magento website to trigger a "Too many connections" error, then use default magmi:magmi basic authentication to remotely bypass authentication.
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 confidenceMAGMI versions before 0.7.24 have a critical authentication bypass vulnerability. Attackers exhaust MySQL connections by sending 151+ simultaneous requests (exceeding default max_connections of 151), causing a 'Too many connections' error. When this database failure occurs, the application falls back to default credentials (magmi:magmi), allowing remote attackers to bypass authentication entirely.
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< 0.7.24CVSS 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 installed MAGMI versionLocate the MAGMI version file or check the application header/config for version information, typically found in the main MAGMI directory or a version-specific fileAffected if The installed version is any version before 0.7.24 (e.g., 0.7.23, 0.7.22, etc.)
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Verify MAGMI is accessibleDetermine whether the MAGMI web interface (typically at /magmi/web/magmi.php or /magmi/index.php) is reachable from network locationsAffected if MAGMI is exposed to untrusted network users or the internet
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Check for default credentials in useExamine the MAGMI configuration file (commonly magmi.ini or similar) to see if the default username 'magmi' with password 'magmi' is configuredAffected if The default credentials (magmi:magmi) are still active in the configuration
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Review MySQL max_connections settingExecute 'SHOW VARIABLES LIKE 'max_connections';' in MySQL and compare the value to the Apache MaxRequestWorkers setting in httpd.conf or apache2.confAffected if MySQL max_connections is set to 151 or lower, or is not significantly higher than Apache's MaxRequestWorkers (which could allow connection exhaustion)
Your environment is affected if you are running any MAGMI version below 0.7.24 AND either the default magmi:magmi credentials are still active OR your MySQL max_connections is at or below 151 and could be exhausted by simultaneous requests.
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.
dbcve · scoped0.7.24
Update MAGMI to version 0.7.24 or later, immediately change the default magmi:magmi credentials to a strong unique password, and configure MySQL max_connections to exceed Apache's MaxRequestWorkers setting to prevent the connection exhaustion condition.
0.7.24
- Upgrade MAGMI to version 0.7.24 or later to remediate the authentication bypass vulnerability
- After upgrading, change the default magmi:magmi credentials to a strong, unique password to prevent unauthorized access
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-5777 — 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-2020-5777 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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- Version or environment caveats, and links to real fixes
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