CVE-2023-54339
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 · uneditedWebgrind 1.1 contains a remote command execution vulnerability that allows unauthenticated attackers to inject OS commands via the dataFile parameter in index.php. Attackers can execute arbitrary system commands by manipulating the dataFile parameter, such as using payload '0%27%26calc.exe%26%27' to execute commands on the target system.
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 confidenceWebgrind 1.1 contains an unauthenticated command injection vulnerability in the dataFile parameter of index.php. Attackers can inject OS commands by using shell metacharacters (such as &) to chain commands, allowing arbitrary system command execution on the target host.
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
- 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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Confirm Webgrind installation and versionLocate Webgrind files (typically in web root) and check version.php or composer.json for version number. Compare to <= 1.1.Affected if Webgrind version 1.1 or lower is installed.
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Verify index.php handles dataFile parameterInspect the index.php file in the Webgrind installation. Search for code that processes the 'dataFile' parameter, typically via $_GET or $_REQUEST.Affected if index.php contains code that uses the dataFile parameter without visible input sanitization.
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Check for command injection vulnerability in dataFile handlingSearch the index.php code for system calls (exec, shell_exec, system, passthru, popen) that incorporate the dataFile parameter directly into shell commands. Look for lack of escapeshellarg or similar sanitization.Affected if The dataFile parameter is passed to shell execution functions without sanitization.
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Determine if Webgrind is exposed to unauthenticated accessVerify if index.php is accessible without authentication. Check if any access controls, authentication mechanisms, or IP restrictions are configured for Webgrind.Affected if index.php is accessible without authentication and the dataFile parameter is not sanitized.
If Webgrind version 1.1 or lower is installed with index.php accessible and the dataFile parameter flows to shell execution functions without sanitization, the system is vulnerable to CVE-2023-54339.
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 dataSanitize and validate the dataFile parameter to prevent command injection, ideally by using strict allowlists or disabling the vulnerable functionality entirely. If available, update to a patched version of Webgrind.
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-54339 — 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-2023-54339 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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