CVE-2026-5828
Received Received - Intake

SQL Injection in Simple IT Discussion Forum addcomment.php Allows Remote Exploit

Publication date: 2026-04-09

Last updated on: 2026-04-29

Assigner: VulDB

Description
A vulnerability was found in code-projects Simple IT Discussion Forum 1.0. The affected element is an unknown function of the file /functions/addcomment.php. The manipulation of the argument postid results in sql injection. The attack may be launched remotely. The exploit has been made public and could be used.

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Meta Information

Published
2026-04-09
Last Modified
2026-04-29
Generated
2026-07-07
AI Q&A
2026-04-09
EPSS Evaluated
2026-07-05
NVD
CVE-2026-5828
EUVD
EUVD-2026-20821

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
code-projects simple_it_discussion_forum 1.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

Attack-Flow Graph

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Compliance Impact

The SQL injection vulnerability in Simple IT Discussion Forum 1.0 allows attackers to perform unauthorized database access, extract sensitive data, modify or delete records, and potentially disrupt services. Such unauthorized access and data manipulation can lead to breaches of confidentiality, integrity, and availability of data.

This can negatively impact compliance with common standards and regulations like GDPR and HIPAA, which require protection of sensitive personal and health information, ensuring data confidentiality and integrity, and maintaining secure systems to prevent unauthorized access.

Failure to address this vulnerability could result in exposure of protected data, leading to regulatory violations, legal consequences, and loss of trust.

Executive Summary

CVE-2026-5828 is a critical SQL injection vulnerability found in the Simple IT Discussion Forum version 1.0, specifically in the file /functions/addcomment.php.

The vulnerability occurs because the postid parameter is used directly in SQL queries without proper input validation or sanitization, allowing attackers to inject malicious SQL code.

This flaw can be exploited remotely without requiring any user authentication or authorization.

Impact Analysis

Exploitation of this vulnerability allows attackers to perform unauthorized database access, including extracting sensitive data, modifying or deleting records, and gaining full control over the system.

Attackers can also cause service disruptions, severely compromising system security and business continuity.

Detection Guidance

This vulnerability can be detected by testing the `postid` parameter in the /functions/addcomment.php file for SQL injection flaws. Proof-of-concept payloads include boolean-based blind SQL injection and time-based blind SQL injection techniques targeting MySQL databases.

  • Boolean-based blind payload example: postid=11' RLIKE (SELECT (CASE WHEN (1040=1040) THEN 11 ELSE 0x28 END))--
  • Time-based blind payload example: postid=11' AND (SELECT 5663 FROM (SELECT(SLEEP(5)))hMFb)--

Additionally, the sqlmap tool can be used to confirm the vulnerability and facilitate database enumeration.

Mitigation Strategies

Immediate mitigation steps include:

  • Implement prepared statements with parameter binding to separate SQL code from user input, preventing injection.
  • Enforce strict input validation and filtering to ensure inputs conform to expected formats.
  • Minimize database user permissions by avoiding use of high-privilege accounts (e.g., root or admin) for routine operations.
  • Conduct regular security audits of code and systems to detect and address vulnerabilities promptly.

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