CVE-2026-85403
Received Received - Intake

SQL Injection in Doctor Appointment System 1.0

Publication date: 2026-09-04

Last updated on: 2026-09-04

Assigner: VulDB

Description
A flaw has been found in code-projects Doctor Appointment System 1.0. This issue affects some unknown processing of the file /contactus.php. This manipulation of the argument firstname causes sql injection. Remote exploitation of the attack is possible. The exploit has been published and may be used.

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Meta Information

Published
2026-09-04
Last Modified
2026-09-04
Generated
2026-09-04
AI Q&A
2026-09-04
EPSS Evaluated
N/A
NVD
CVE-2026-85403
EUVD
EUVD-2026-70874

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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.
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.

Attack-Flow Graph

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Executive Summary

This vulnerability is a SQL injection flaw in the Doctor Appointment System 1.0, specifically in the /contactus.php file. It occurs due to improper input validation of the 'firstname' parameter, allowing attackers to inject malicious SQL queries without authentication. The flaw enables unauthorized database access and manipulation.

Detection Guidance

To detect SQL injection vulnerabilities like CVE-2026-85403, you can use tools such as SQLmap to test the /contactus.php endpoint with the firstname parameter. Example command: sqlmap -u "http://target/contactus.php?firstname=test" --batch. Alternatively, manually test by sending payloads like ' OR '1'='1 in the firstname field and observe responses for errors or unexpected data.

Impact Analysis

This vulnerability can lead to severe impacts such as unauthorized access to sensitive data, data tampering, data leakage, and potential system compromise. Attackers could disrupt services or gain control over the system without authentication.

Compliance Impact

This vulnerability likely violates compliance requirements under GDPR and HIPAA due to unauthorized data access and potential data breaches. It compromises data confidentiality and integrity, which are critical for these regulations.

Mitigation Strategies

Immediately apply input validation to sanitize the firstname parameter in /contactus.php. Use prepared statements for all database queries. Restrict database user permissions to the minimum required. Update the system to the latest patched version if available. Conduct a security audit to identify other potential vulnerabilities.

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