dbcve.org
Simple Online Hotel Reservation SystemApplication · Fabian

CVE-2025-6421

CRITICAL · 9.8 CVSS v3.1 Published 2025-06-21
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Public exploit Remotely reachable No privileges Zero-click

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 was found in code-projects Simple Online Hotel Reservation System 1.0. It has been rated as critical. This issue affects some unknown processing of the file /admin/add_account.php. The manipulation of the argument name/admin_id leads to sql injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

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 confidence

SQL injection vulnerability in Simple Online Hotel Reservation System 1.0's /admin/add_account.php script. The name/admin_id parameter is not properly sanitized before being used in SQL queries, allowing remote attackers to inject arbitrary SQL commands.

MitigationReplace dynamic SQL queries with prepared statements/parameterized queries. Apply input validation and enforce least privilege on database accounts.

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
Simple Online Hotel Reservation SystemApplication
Affected:= 1.0

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
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 checks

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

  1. Confirm application presence
    Search for files or directories related to Simple Online Hotel Reservation System in the web root or document directories
    Affected if The application is installed in the environment
  2. Identify installed version
    Locate version information in the application (check README files, version config, or metadata)
    Affected if The installed version is 1.0
  3. Locate vulnerable script
    Verify the presence of /admin/add_account.php in the web application directory
    Affected if The file exists in the application structure
  4. Check admin endpoint accessibility
    Verify that the /admin/ path is accessible via HTTP/HTTPS from the network
    Affected if The admin interface is reachable over the network

If Simple Online Hotel Reservation System version 1.0 is installed and the /admin/add_account.php script is network-accessible, the environment is affected by this SQL injection vulnerability.

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

Replace dynamic SQL queries with prepared statements/parameterized queries. Apply input validation and enforce least privilege on database accounts.

Fix this in Simple Online Hotel Reservation System Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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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-2025-6421 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
  • 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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