| Título | Piwigo 16.3.0 Path Traversal |
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| Descrição | Piwigo 16.3.0 (https://github.com/Piwigo/Piwigo) contains an unauthenticated path traversal vulnerability in i.php. The endpoint accepts a user-controlled derivative request path from the URL and validates path tokens with a regex that still allows dot characters. As a result, traversal segments such as .. are accepted and concatenated into the derivative output path without proper normalization and confinement to the intended _data/i cache directory. An unauthenticated attacker can use this to make Piwigo generate and write derivative image files outside the intended _data/i subtree. The primitive is constrained to image output rather than arbitrary bytes, but it still allows attacker-controlled path traversal affecting derivative file writes. |
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| Fonte | ⚠️ https://github.com/Leousum/VulnPoC/blob/main/Piwigo%2016.3.0/unauthenticated_derivative_path_traversal.md |
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| Utilizador | Leousum (UID 37212) |
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| Submissão | 10/07/2026 11h53 (há 3 meses) |
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| Moderação | 01/09/2026 21h35 (2 months later) |
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| Estado | Aceite |
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| Entrada VulDB | 397806 [Piwigo até 16.3.0 Image Derivative i.php Travessia de Diretório] |
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| Pontos | 20 |
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