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Photo Gallery PhpApplication · Simplephpscripts

CVE-2023-3538

MEDIUM · 5.4 CVSS v3.1 Published 2023-07-07
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
58/100
Remediation priority · Elevated
Remotely reachable

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 · unedited
A vulnerability classified as problematic was found in SimplePHPscripts Photo Gallery PHP 2.0. This vulnerability affects unknown code of the file /preview.php of the component URL Parameter Handler. The manipulation leads to cross site scripting. The attack can be initiated remotely. VDB-233290 is the identifier assigned to this vulnerability.

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 confidence

A stored cross-site scripting (XSS) vulnerability exists in SimplePHPscripts Photo Gallery PHP 2.0 in the /preview.php file's URL parameter handler. The application fails to properly sanitize or validate input passed through URL parameters before rendering it in the page output, allowing an attacker to inject malicious JavaScript code that executes in the context of other users' browsers.

MitigationImplement proper input validation and output encoding for all URL parameters in preview.php. Use context-appropriate escaping (HTML encoding for displayed content) and consider implementing a Content Security Policy (CSP) header to further mitigate XSS risks.

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
Photo Gallery PhpApplication
Affected:= 2.0

CVSS 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
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm Photo Gallery installation
    Locate the SimplePHPscripts Photo Gallery PHP installation by searching for the preview.php file in your web root directory (commonly in /, /gallery/, or /photos/). Check for the presence of the application files.
    Affected if The SimplePHPscripts Photo Gallery PHP application with preview.php is found on the server.
  2. Verify the exact version
    Inspect the application source files (such as index.php, about.php, or a version/config file) to determine the installed version number. Compare against the affected version 2.0.
    Affected if The installed version is exactly 2.0.
  3. Check preview.php accessibility
    Confirm that preview.php is accessible via the web server and responds to HTTP requests. Attempt to access it directly through a browser or curl command.
    Affected if The preview.php file is publicly accessible via HTTP.
  4. Identify vulnerable URL parameters
    Review the preview.php source code to locate where URL parameters are processed and reflected in the page output. Look for $_GET, $_REQUEST, or similar superglobal usage without sanitization functions like htmlspecialchars() or filter functions.
    Affected if URL parameters are read and output in the page without proper sanitization or encoding.
  5. Test for XSS injection point
    Craft a test URL with a benign XSS payload in the URL parameter (for example: /preview.php?param=<script>alert('XSS')</script>) and observe whether the payload is rendered unescaped in the response.
    Affected if The injected JavaScript payload appears literally in the HTML output without being escaped.

The environment is affected if SimplePHPscripts Photo Gallery PHP version 2.0 is installed with the preview.php file accessible and URL parameters are reflected in the page output without sanitization.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper input validation and output encoding for all URL parameters in preview.php. Use context-appropriate escaping (HTML encoding for displayed content) and consider implementing a Content Security Policy (CSP) header to further mitigate XSS risks.

Fix this in Photo Gallery Php Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing1.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,090
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-3538 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
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  • Version or environment caveats, and links to real fixes
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