CVE-2007-0542
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 · uneditedCross-site scripting (XSS) vulnerability in show.php in 212cafe Guestbook 4.00 beta allows remote attackers to inject arbitrary web script or HTML via the user parameter.
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 confidenceReflected XSS vulnerability in show.php of 212cafe Guestbook 4.00 beta where the user parameter accepts unsanitized input, allowing injection of arbitrary JavaScript or HTML that executes in victim browsers.
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= 4.00_betaCVSS 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
- M
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- Partial
- Availability
- Partial
AV:N/AC:M/Au:N/C:P/I:P/A:P
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 show.php installationSearch the web root directory for the file show.php that belongs to 212cafe GuestbookAffected if show.php from 212cafe Guestbook is found in the web application directory
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Confirm the version is 4.00_betaCheck the version information of the installed 212cafe Guestbook (often in a readme, version file, or comments in show.php)Affected if The installed version is exactly 4.00_beta
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Identify user parameter handling in show.phpOpen show.php and locate the code that retrieves the 'user' parameter (typically via $_GET['user'] or similar)Affected if show.php processes a 'user' parameter from user input
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Test for unsanitized reflectionSend a request to show.php with a crafted user parameter such as user=<script>alert(1)</script> and observe if the script tags appear unmodified in the responseAffected if The user parameter value is reflected in the HTML response without sanitization or encoding
A user is affected if 212cafe Guestbook version 4.00_beta is installed and the show.php script reflects the user parameter input into the HTML output without proper sanitization.
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 input validation and output encoding (HTML escaping) for the user parameter in show.php before rendering user-supplied content.
- Consultation1.0 h
- Implementation2.0 h
- Testing1.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2007-0542 — 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-2007-0542 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