Real3D Flipbook – 3D FlipBook, PDF FlipBook, PDF Viewer, PDF Embedder に脆弱性 — CVE-2026-15098

いま何をすべきか

Real3D Flipbook – 3D FlipBook, PDF FlipBook, PDF Viewer, PDF Embedder を 5.1.2 以降に更新してください。

影響を受けるバージョン

• 5.1.1 以下のすべて

The Real3D Flipbook Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'lightboxtext' shortcode attribute (and other unsanitized attributes handled by on_shortcode()) in versions up to, and including, 5.1.1. This is due to insufficient input sanitization and output escaping in the on_shortcode() and print_global_options() functions: shortcode attribute values are copied verbatim into $this->flipbook_options and then emitted via wp_json_encode() inside a <script type="application/json"> block without the JSON_HEX_TAG flag, allowing a literal </script> byte sequence in the attribute value to break out of the JSON script context. Because WordPress's shortcode_parse_atts() applies stripcslashes() to attribute values, an attacker can encode the breakout tag as \x3c/script\x3e\x3cscript\x3e…\x3c/script\x3e, which survives the wp_kses_post save-time filter applied to Contributor content (the escape bytes are safe text characters, not HTML tags) and is decoded to real angle brackets at render time. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user (typically an Editor or Administrator previewing/moderating the pending post) accesses an injected page.

この説明は公開データベースの記載をそのまま載せています。 日本語の要約は付けていません。訳の過程で意味が変わると、対応の判断を誤らせるためです。

• https://www.wordfence.com/threat-intel/vulnerabilities/id/f6df3abe-ef27-46d7-bbdd-abd994fce132?source=api-prod

この情報の一部は Wordfence Intelligence から取得しています。 原本: https://www.wordfence.com/threat-intel/vulnerabilities/id/f6df3abe-ef27-46d7-bbdd-abd994fce132
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