| Titel | SourceCodester SourceCodester KLiK Social Media Website v1.0.1 CRLF Injection |
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| Beschreibung | During security testing of the delete-post.php endpoint, an HTTP header injection vulnerability was discovered in the topic parameter. The application takes user-supplied input from the topic parameter and directly concatenates it into the Location HTTP response header without proper sanitization, validation, or encoding.
By injecting CR (Carriage Return, %0d) and LF (Line Feed, %0a) characters into the topic parameter, an attacker can manipulate the HTTP response structure. The vulnerability is triggered when the application performs a redirect via the header() function after specific conditions are met (e.g., SQL statement preparation failures or query results).
Example malicious request:
GET /includes/delete-post.php?topic=1%0d%0aSet-Cookie:%20session=Hijacked%0d%0aX-IGNORE:&post=123&by=1 HTTP/1.1
Host: target.com
Cookie: PHPSESSID=valid_session |
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| Quelle | ⚠️ https://github.com/msaad1999/KLiK-SocialMediaWebsite |
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| Benutzer | g111 (UID 92409) |
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| Einreichung | 27.04.2026 04:01 (vor 5 Monaten) |
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| Moderieren | 24.05.2026 08:52 (27 days later) |
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| Status | Duplikat |
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| VulDB Eintrag | 365401 [KLiK SocialMediaWebsite 1.0 HTTP GET Request Parameter erweiterte Rechte] |
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| Punkte | 0 |
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