CVE-2023-34648
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 · uneditedA Cross Site Scripting vulnerability in PHPgurukl User Registration Login and User Management System with admin panel v.1.0 allows a local attacker to execute arbitrary code via a crafted script to the signup.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 · moderate confidenceCross-Site Scripting (XSS) vulnerability in the signup.php page of PHPgurukl User Registration Login and User Management System v1.0 allows injection of malicious script through user registration fields. The vulnerability is exploitable by crafting malicious input that gets stored and executed in the context of other users' 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= 1.0CVSS 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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Confirm PHPgurukl User Registration system is installedSearch the web root for files named signup.php, login.php, or directories containing 'user' and 'registration' in the path. Common locations include /registration/, /user/, or /phpgurukl/ under the web document root.Affected if The PHPgurukl User Registration & Login system files exist on the server
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Identify the installed versionCheck for a version file (version.php, ver.txt) in the application root, or inspect the header/comment blocks of PHP files for a version number. Also check README or changelog files that may be present.Affected if The version is 1.0 or cannot be determined (treat as vulnerable)
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Verify signup.php exists and is accessibleLocate the signup.php file in the application directory structure. Confirm it is accessible via HTTP/HTTPS by attempting to access the registration page URL.Affected if signup.php exists and is publicly accessible
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Check if user registration is enabledExamine the application's configuration files (config.php, settings.php, or similar) for a flag that enables or disables new user registration. Look for variables like 'allow_registration', 'user_registration_enabled', or 'register_enabled'.Affected if User registration functionality is enabled in the application configuration
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Inspect signup.php for input validationOpen signup.php and review the code that handles form input (typically $_POST or $_REQUEST variables). Look for sanitization functions like htmlspecialchars, strip_tags, or input validation routines applied to user-supplied fields before database insertion.Affected if No input validation/sanitization is performed on registration form fields before storing to database
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Check if stored user data is output without encodingSearch the codebase for files that retrieve and display user registration data (common in admin panels or user profile pages). Look for variables that output user input directly to HTML without htmlspecialchars or similar encoding functions.Affected if User registration data is displayed in HTML contexts without proper output encoding
A user is affected if they have PHPgurukl User Registration & Login System v1.0 installed with signup.php accessible and user registration enabled, AND the code lacks proper input validation on registration fields AND lacks output encoding when displaying stored user data.
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 robust input validation on all user-supplied data in signup.php and apply proper output encoding/escaping when displaying user inputs to prevent script execution.
- 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.
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Free · runs locallyCheck whether your project pulls in CVE-2023-34648 — 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-2023-34648 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