DATABASE
FILE — 011VULNERABILITY DATABASE
WP-RESCUE // Threat intelligence · 脆弱性データベース
脆弱性データベース
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脆弱性情報を読み込んでいます
DATABASE
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Photo: Rob Wingate / Unsplash
WATRIXは外部からの無料診断に加え、個別の影響調査、侵害されたサイトの復旧・再発防止のご相談を承ります。
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ADVISORY
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LOADING DATABASE
影響範囲と修正情報を読み込んでいます
ADVISORY
影響範囲、修正情報、出典と履歴を確認できます。
Photo: Rob Wingate / Unsplash
LOADING DATABASE
影響範囲と修正情報を読み込んでいます
ADVISORY
掲載中修正版ありImage Optimizer – Compress Images and Convert to WebP or AVIF
Photo: Rob Wingate / Unsplash
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CVE-2026-5821
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公開元の記載です。日本語での確認手順・対処の解説が付いていない項目も含まれます。
The Image Optimizer plugin for WordPress is vulnerable to arbitrary file deletion in versions up to and including 1.7.4. This is due to insufficient path validation in the Image_Backup::remove() function where backup file paths stored in post meta are used directly in file deletion operations without verifying they are within the uploads directory. The plugin stores backup file paths in the image_optimizer_metadata post meta field and trusts these paths completely when deleting backups on the delete_attachment hook. An authenticated attacker with Author-level access can edit the image_optimizer_metadata post meta on their own attachments via WordPress's Custom Fields interface, injecting arbitrary absolute file paths into the backups array. When the attacker subsequently deletes the attachment, the plugin calls File_System::delete() on each path without validation. This makes it possible for authenticated attackers, with Author-level access and above, to delete arbitrary files on the server within the web server's filesystem permissions, potentially leading to denial of service, data loss, or security degradation.
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現在の保存内容2026/10/31 18:02
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