CVE-2026-2058
SQL Injection in CloudClassroom-PHP Post Query Allows Remote Exploit
Publication date: 2026-02-06
Last updated on: 2026-04-29
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| vishalmathur | cloudclassroom-php-project | 1.0 |
Helpful Resources
Exploitability
| 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
AI Powered Q&A
Can you explain this vulnerability to me?
[{'type': 'paragraph', 'content': "CVE-2026-2058 is a high-severity SQL Injection vulnerability in the CloudClassroom PHP Project, specifically in the Post Query feature located in the file /postquerypublic.php. The vulnerability occurs because the application directly concatenates user input from the POST parameter 'gnamex' into SQL queries without proper sanitization or use of parameterized queries."}, {'type': 'paragraph', 'content': 'This flaw allows attackers to inject arbitrary SQL code, which can be used to enumerate database tables and extract sensitive information such as usernames and hashed passwords from the admin table. The vulnerability can be exploited remotely without authentication.'}, {'type': 'paragraph', 'content': "Attackers exploit this by injecting specially crafted payloads that cause SQL errors revealing database information, for example using MySQL's updatexml() function to extract data via error messages."}, {'type': 'paragraph', 'content': "The recommended fix is to implement prepared statements using PHP's mysqli or PDO extensions, apply strict input validation and escaping, and enforce least privilege principles on the database user."}] [1, 2, 3]
How can this vulnerability impact me? :
This vulnerability can have serious impacts including unauthorized extraction of sensitive information such as user credentials, hashed passwords, and exam results from the database.
Attackers can enumerate database metadata including database names, tables, and columns, potentially compromising the entire application and its underlying database.
Because the vulnerability can be exploited remotely without authentication, it increases the risk of data breaches and unauthorized access.
The flaw compromises the confidentiality, integrity, and availability of the system, potentially leading to data loss, data manipulation, or service disruption.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
[{'type': 'paragraph', 'content': 'This SQL Injection vulnerability can be detected by testing the vulnerable endpoint /postquerypublic.php with specially crafted POST requests targeting the gnamex parameter.'}, {'type': 'paragraph', 'content': 'Attackers use payloads that trigger SQL errors revealing database information, such as the following example payload to reveal the current database name:'}, {'type': 'list_item', 'content': "a' AND updatexml(1,concat(0x7e,(SELECT database()),0x7e),1) AND '1'='1"}, {'type': 'paragraph', 'content': 'You can simulate this by sending a POST request with the gnamex parameter set to such payloads using tools like curl or Burp Suite. For example, a curl command might look like:'}, {'type': 'list_item', 'content': 'curl -X POST -d "gnamex=a\' AND updatexml(1,concat(0x7e,(SELECT database()),0x7e),1) AND \'1\'=\'1" https://targetsite.com/postquerypublic.php'}, {'type': 'paragraph', 'content': 'If the response contains SQL error messages or reveals database names, tables, or other metadata, it indicates the presence of the vulnerability.'}, {'type': 'paragraph', 'content': "Additionally, Google dorking can be used to locate potentially vulnerable instances by searching for URLs containing 'postquerypublic.php'."}, {'type': 'list_item', 'content': 'Google dork: inurl:postquerypublic.php'}] [1, 2, 3]
What immediate steps should I take to mitigate this vulnerability?
[{'type': 'paragraph', 'content': 'Immediate mitigation steps include:'}, {'type': 'list_item', 'content': "Implement prepared statements using PHP's mysqli or PDO extensions to safely handle user input and prevent SQL injection."}, {'type': 'list_item', 'content': 'Apply strict input validation and escaping on all user-supplied data, especially the gnamex parameter.'}, {'type': 'list_item', 'content': 'Enforce the least privilege principle on the database user account to limit the impact of a potential exploit.'}, {'type': 'list_item', 'content': 'Avoid relying on blacklist-based filtering as it can be easily bypassed using encoding, inline comments, or alternate syntax.'}, {'type': 'paragraph', 'content': "If possible, replace or update the affected component to a version that addresses this vulnerability, although specific patched versions are not available due to the product's rolling release strategy."}] [1, 2, 3]