| 제목 | Piwigo 16.3.0 Path Traversal |
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| 설명 | 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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| 원천 | ⚠️ https://github.com/Leousum/VulnPoC/blob/main/Piwigo%2016.3.0/unauthenticated_derivative_path_traversal.md |
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| 사용자 | Leousum (UID 37212) |
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| 제출 | 2026. 07. 10. AM 11:53 (3 개월 ago) |
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| 모더레이션 | 2026. 09. 01. PM 09:35 (2 months later) |
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| 상태 | 수락 |
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| VulDB 항목 | 397806 [Piwigo 까지 16.3.0 Image Derivative i.php 디렉토리 순회] |
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| 포인트들 | 20 |
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