CVE-2011-4333
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 · uneditedMultiple cross-site scripting (XSS) vulnerabilities in LabWiki 1.1 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) from parameter to index.php or the (2) page_no parameter to recentchanges.php.
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 confidenceTwo reflected XSS vulnerabilities in LabWiki 1.1 and earlier allow remote attackers to inject arbitrary web script or HTML via the 'from' parameter in index.php and the 'page_no' parameter in recentchanges.php due to insufficient input sanitization and output encoding.
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<= 1.1CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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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Locate LabWiki installationSearch the web server document root for index.php and recentchanges.php files that are part of LabWiki, or check common paths like /var/www/html/, /www/, or the application's web directory.Affected if LabWiki files are found on the server and the version cannot be determined or is 1.1 or earlier
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Identify LabWiki versionCheck the source code for a version identifier, typically in a configuration file, header comment, or a /about or /info page within LabWiki. Common locations include version.php, config.php, or the footer of pages.Affected if The installed version is 1.1 or earlier, or no version number is found (assumed vulnerable)
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Verify vulnerable parameter acceptance in index.phpExamine index.php source code for how the 'from' parameter is handled - look for $_GET['from'] or $_REQUEST['from'] being used in the page output without sanitization functions like htmlspecialchars() or proper encoding.Affected if The 'from' parameter is processed and echoed to the page output without sanitization
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Verify vulnerable parameter acceptance in recentchanges.phpExamine recentchanges.php source code for how the 'page_no' parameter is handled - look for $_GET['page_no'] or $_REQUEST['page_no'] being used in the page output without sanitization functions like htmlspecialchars() or proper encoding.Affected if The 'page_no' parameter is processed and echoed to the page output without sanitization
The environment is affected if LabWiki version 1.1 or earlier is installed and either index.php or recentchanges.php processes the 'from' or 'page_no' parameters without proper output encoding.
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 proper input validation and output encoding/escaping on the 'from' and 'page_no' parameters to neutralize malicious script payloads before rendering in the browser.
- Consultation2.0 h
- Implementation3.0 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 $2,272.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2011-4333 — 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-2011-4333 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
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