CVE-2024-27448
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 · uneditedMailDev 2 through 2.1.0 allows Remote Code Execution via a crafted Content-ID header for an e-mail attachment, leading to lib/mailserver.js writing arbitrary code into the routes.js file.
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 confidenceMailDev 2.0-2.1.0 has a remote code execution vulnerability where a crafted Content-ID header in an email attachment is written directly to the routes.js file, which is then executed by the application. This allows an attacker to inject and execute arbitrary code on the server.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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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Identify MailDev versionRun 'npm list maildev' or check package.json for the installed maildev version. If using a package manager, query: npm list -g maildev, docker images, or your system's package manager.Affected if Version is 2.0, 2.0.x, or 2.1.0 (any version from 2.0 through 2.1.0 inclusive)
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Confirm SMTP server is enabledCheck MailDev configuration or running processes for SMTP listener (default port 1025). Inspect startup command or config file for '--smtp' flag or smtp config section.Affected if SMTP server is active and accepting connections on port 1025 (or configured SMTP port)
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Verify web interface is enabledCheck if MailDev web interface is running (default port 1080). Inspect process list or netstat for port 1080 or configured web port.Affected if Web interface is accessible on the configured port
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Inspect routes.js for injected codeLocate the routes.js file in the MailDev installation directory or runtime directory. Search for Content-ID patterns, script tags, or any unexpected JavaScript code that was not part of the original application.Affected if routes.js contains suspicious Content-ID values, script injections, or arbitrary code not authored by the development team
If MailDev version 2.0-2.1.0 is running with both SMTP and web interfaces enabled, and routes.js contains unexpected Content-ID data or injected code, the environment is vulnerable to CVE-2024-27448.
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 dataImplement strict validation of the Content-ID header to reject characters that could be used for code injection, and refactor the application to not write user-controlled data to executable files.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-27448 — 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-2024-27448 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