WordPressプラグイン「Molongui Authorship – Author Boxes, Guest Authors & Co-Authors for WordPress」にクロスサイトスクリプティング（XSS）の脆弱性（CVE-2026-101920）
概要
WordPressプラグイン「Molongui Authorship – Author Boxes, Guest Authors & Co-Authors for WordPress」にクロスサイトスクリプティング（XSS）の脆弱性が確認されました。
バージョン 5.2.12 以前に影響があります。
修正版 5.3.0 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-101920 WF-1bf63dd3-9fd1-4b72-b7e0-48155312c48f |
|---|---|
| 脆弱性の種類 | クロスサイトスクリプティング（XSS） |
| 危険度 | 高 |
| CVSSスコア |
7.2（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| 公開日 | 2026年10月9日 |
| 更新日 | 2026年10月10日 |
影響を受ける製品
| 製品 | 影響を受けるバージョン | 修正版 | 出典 |
|---|---|---|---|
| WordPressプラグイン「Molongui Authorship – Author Boxes, Guest Authors & Co-Authors for WordPress」 |
5.2.12 以前 | 5.3.0 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「Molongui Authorship – Author Boxes, Guest Authors & Co-Authors for WordPress」を修正版 5.3.0 またはそれ以降の公式最新版へ更新してください。
情報元の原文
Wordfence Intelligence
Molongui Authorship <= 5.2.12 - Unauthenticated Stored DOM-Based Cross-Site Scripting via Comment href Attribute
The Molongui Authorship – Author Boxes, Guest Authors & Co-Authors for WordPress plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'comment (href attribute inside comment content)' parameter in all versions up to, and including, 5.2.12 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is exploitable in the free build because the plugin's author-filter rewriter never appends the ?m_bm=true marker to its own anchors (Plugin::has_pro() returns false), meaning every href the byline script selects and rewrites is fully attacker-controlled.
Copyright 2012-2026 Defiant Inc.
Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.
Copyright 1999-2026 The MITRE Corporation
CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.