| Title | SourceCodester Drug Recommendation System 1.0 SQL Injection |
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| Description | A SQL injection vulnerability exists in SourceCodester Drug Recommendation System 1.0 in Admin/add_drug.php. The POST parameters txtname, cmdtype, txtusage, txtsideeffect, and cmdcontraindication are processed with mysqli_real_escape_string() but still concatenated directly into SELECT and INSERT queries without parameterized binding. The escape function can be bypassed under non-standard MySQL character sets and does not provide the same protection as prepared statements.
Vulnerable queries:
SELECT * FROM drugs WHERE name = '$name' AND type = '$type'
INSERT INTO drugs (name, type, drug_usage, side_effects, contraindications) VALUES ('$name', '$type', '$usage', '$sideeffect', '$contraindication')
Proof of Concept (authenticated):
POST /Admin/add_drug.php
Content-Type: application/x-www-form-urlencoded
Cookie: PHPSESSID=<valid>
btnadd=1&txtname=test' OR 1=1-- -&cmdtype=Tablet&txtusage=test&txtsideeffect=test&cmdcontraindication=Pregnancy
Impact: An authenticated attacker can inject SQL through drug creation fields, extracting or modifying database contents. CWE-89, CVSS v3.1 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
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| Source | ⚠️ https://www.sourcecodester.com/php/18278/drug-recommender-web-app-student-project.html |
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| User | swj99557271 (UID 101148) |
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| Submission | 09/10/2026 05:49 (25 days ago) |
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| Moderation | 10/04/2026 10:50 (24 days later) |
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| Status | Accepted |
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| VulDB entry | 413409 [SourceCodester Drug Recommendation System 1.0 Drug Creation /Admin/add_drug.php sql injection] |
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| Points | 20 |
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