CVE-2011-3821
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 · uneditedxajax 0.6 beta1 allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation path in an error message, as demonstrated by xajax_core/plugin_layer/xajaxScriptPlugin.inc.php and certain other files.
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 · moderate confidencexajax 0.6 beta1 contains multiple PHP files (including xajax_core/plugin_layer/xajaxScriptPlugin.inc.php) that, when accessed directly, expose the server's installation path in error messages. This information disclosure assists attackers in reconnaissance for more targeted attacks.
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= 0.6CVSS 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
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- None
- Availability
- None
AV:N/AC:L/Au:N/C:P/I:N/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 xajax versionLocate the xajax installation and look for version information in any version file, header comment, or README. Common paths include the root xajax directory or xajax_core directory.Affected if The installed version is xajax 0.6 beta1 or exactly version 0.6
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Check if vulnerable file existsVerify the presence of xajax_core/plugin_layer/xajaxScriptPlugin.inc.php in the web root or xajax installation directory.Affected if The file xajax_core/plugin_layer/xajaxScriptPlugin.inc.php exists in the installation
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Test for path disclosure via direct file accessUsing a web browser or curl, make an HTTP GET request directly to xajax_core/plugin_layer/xajaxScriptPlugin.inc.php (or any .inc.php file in the xajax_core/plugin_layer/ directory). Observe if the response contains the server's full file system path in an error message.Affected if The response displays the full server installation path in an error message
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Test additional vulnerable PHP filesAttempt direct HTTP access to other .inc.php files in the xajax_core directory and subdirectories to check for similar path disclosure.Affected if Any directly accessed .inc.php file reveals the server's installation path in an error message
A user is affected if xajax version 0.6 is installed AND direct web access to include files (particularly xajax_core/plugin_layer/xajaxScriptPlugin.inc.php) produces error messages showing the server's file system path.
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 dataDisable detailed PHP error messages in production, restrict direct web access to include files, or upgrade to a patched version if available.
- Consultation2.0 h
- Implementation3.0 h
- Testing1.0 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 $2,032.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2011-3821 — 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-2011-3821 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