dbcve.org
InjectionWeakness · CWE-74

CVE-2026-4573

MEDIUM · 6.3 CVSS v3.1 Published 2026-03-23
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
Remediation priority · Elevated
Remotely reachable 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 security vulnerability has been detected in SourceCodester Simple E-learning System 1.0. This affects an unknown part of the file /includes/form_handlers/delete_post.php of the component HTTP GET Parameter Handler. The manipulation of the argument post_id leads to sql injection. It is possible to initiate the attack remotely. The exploit has been disclosed publicly 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 · moderate confidence

SQL injection vulnerability in SourceCodester Simple E-learning System 1.0 where the post_id GET parameter in /includes/form_handlers/delete_post.php is not properly sanitized before being used in SQL queries, allowing remote attackers to inject malicious SQL code.

MitigationReplace direct string concatenation in SQL queries with parameterized queries/prepared statements and implement proper input validation for the post_id parameter.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

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
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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. Identify the installed application and version
    Locate the application files and check for version identifiers such as a version.php file, README, or footer/version info. SourceCodester Simple E-learning System typically stores version information in a config file or footer of the main page.
    Affected if The application is SourceCodester Simple E-learning System version 1.0 or if the version cannot be determined but matches the product name.
  2. Verify the vulnerable file exists
    Check if the file /includes/form_handlers/delete_post.php exists in the web root directory of the application.
    Affected if The file delete_post.php exists at the expected path within the application installation.
  3. Examine the delete_post.php code for SQL injection vulnerability
    Open /includes/form_handlers/delete_post.php and inspect how the post_id GET parameter is handled. Look for direct use of $_GET['post_id'] in SQL queries without prepared statements, parameterized queries, or proper sanitization functions like mysqli_real_escape_string or PDO quote().
    Affected if The code uses direct string concatenation with the post_id parameter in SQL queries (e.g., "SELECT * FROM posts WHERE id = " . $_GET['post_id']) rather than parameterized queries.
  4. Confirm the application is web-accessible
    Verify the web server is running and the application is accessible via HTTP/HTTPS. The vulnerability is remotely exploitable via GET requests.
    Affected if The application is accessible over the network and the delete_post.php endpoint accepts requests.
  5. Check if the post_id parameter is accepted without authentication
    Attempt to access the delete_post.php endpoint with a test post_id value (e.g., /includes/form_handlers/delete_post.php?post_id=1) to see if the application processes the request without requiring authentication or CSRF tokens.
    Affected if The endpoint processes the post_id parameter without requiring authenticated session or valid CSRF token.

If the application is SourceCodester Simple E-learning System 1.0, contains the delete_post.php file, and that file uses direct concatenation of the post_id GET parameter in SQL queries without prepared statements, the environment is affected by CVE-2026-4573.

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 direct string concatenation in SQL queries with parameterized queries/prepared statements and implement proper input validation for the post_id parameter.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation3.0 h
  • Testing6.0 h
  • Review / QA3.0 h
16.0 hours of engineering $2,780
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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-2026-4573 in production — separate from our analysis above.

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What this is

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