CVE-2023-27507
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 · uneditedMicroEngine Mailform version 1.1.0 to 1.1.8 contains a path traversal vulnerability. If the product's file upload function and server save option are enabled, a remote attacker may save an arbitrary file on the server and execute it.
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 confidenceMicroEngine Mailform versions 1.1.0 through 1.1.8 contains a path traversal vulnerability in its file upload functionality. When the file upload function and server save option are enabled, an attacker can manipulate file paths during upload to save arbitrary files to arbitrary locations on the server, potentially achieving remote code execution.
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>= 1.1.0, < 1.1.9CVSS 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 MicroEngine Mailform installation and versionLocate the Mailform installation directory and check the version information typically found in the main script file, configuration, or a version manifest. Common locations include the root directory where the product is installed.Affected if The installed version is 1.1.0 through 1.1.8 (versions >= 1.1.0 and < 1.1.9)
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Verify if file upload functionality is enabledExamine the Mailform configuration settings or admin panel for the file upload feature. Look for settings named 'file upload', 'enable upload', or similar options that control whether file attachments are accepted.Affected if File upload functionality is enabled in the configuration
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Confirm if server save option is configuredCheck the Mailform configuration for the 'server save' or 'save to server' option that controls whether uploaded files are stored on the server filesystem rather than only attached to emails.Affected if Server save option is enabled, causing uploaded files to be written to disk
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Check for path traversal protection in upload handlingReview the upload handling code or configuration for path validation mechanisms. Look for sanitization of file paths, restrictions on allowed directories, or validation that prevents directory traversal characters like '../' in filenames.Affected if No path validation exists or it can be bypassed, allowing manipulation of upload paths
A user is affected if MicroEngine Mailform version 1.1.0-1.1.8 is installed with both file upload and server save options enabled, allowing unauthenticated attackers to write files to arbitrary locations via path traversal in the upload function.
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 · scoped1.1.9
Disable the file upload function and server save option if not required, or upgrade to a patched version once available. Implement strict path validation and whitelist-based file name sanitization on the file upload endpoint.
1.1.9
- Back up the current Mailform installation before upgrading
- Download MicroEngine Mailform version 1.1.9 or later from the official vendor source
- Replace the existing installation files with the new version
- Verify that the file upload function works correctly after the upgrade
- Confirm the path traversal vulnerability is resolved by testing file uploads with path traversal attempts
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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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-27507 — 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-2023-27507 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