Login SignupApplication · Vishnusivadas

CVE-2025-51092

CRITICAL · 9.8 CVSS v3.1 Published 2025-08-22
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
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
The LogIn-SignUp project by VishnuSivadasVS is vulnerable to SQL Injection due to unsafe construction of SQL queries in DataBase.php. The functions logIn() and signUp() build queries by directly concatenating user input and unvalidated table names without using prepared statements. While a prepareData() function exists, it is insufficient to prevent SQL injection and does not sanitize the table name.

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

The DataBase.php file in the LogIn-SignUp project contains SQL injection vulnerabilities in the logIn() and signUp() functions. These functions construct SQL queries through direct string concatenation of user input and table names rather than using parameterized prepared statements. While a prepareData() function exists, it fails to sanitize table names and is insufficient to prevent injection attacks.

MitigationReplace all dynamic SQL query construction with prepared statements using parameterized queries, and implement strict allowlist validation for any table names used in queries.

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
Login SignupApplication
Affected:all versions

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. Locate the DataBase.php file in the project
    Search the project directory for a file named DataBase.php. Common paths may include a /lib, /database, or /src folder.
    Affected if The DataBase.php file exists in the project and contains the logIn() and signUp() functions
  2. Inspect the logIn() function for SQL injection patterns
    Open DataBase.php and examine the logIn() function. Look for SQL query construction using string concatenation (using . or + operators) with user-supplied input or dynamic table names.
    Affected if The logIn() function builds SQL queries through direct string concatenation rather than using prepared statements with bound parameters
  3. Inspect the signUp() function for SQL injection patterns
    Open DataBase.php and examine the signUp() function. Look for SQL query construction using string concatenation with user input or table names.
    Affected if The signUp() function builds SQL queries through direct string concatenation rather than using prepared statements with bound parameters
  4. Verify if prepared statements are used in these functions
    Check the logIn() and signUp() functions for the presence of prepared statement methods such as prepare(), bindParam(), bindValue(), or similar parameter binding. Also verify if any table name validation or allowlist is applied before query construction.
    Affected if No prepared statements with parameter binding are used, and table names are not validated against an allowlist before being concatenated into SQL queries

If the DataBase.php file exists with logIn() and signUp() functions that construct SQL queries through direct string concatenation without prepared statements, the environment is affected by this CVE.

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 all dynamic SQL query construction with prepared statements using parameterized queries, and implement strict allowlist validation for any table names used in queries.

Fix this in Login Signup Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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Scan for this in your stack

Free · runs locally
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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-2025-51092 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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