slug: xss
Explanation
XSSは「Webページの中に、攻撃者の悪意あるJavaScriptを忍び込ませる」攻撃です。
例えば掲示板に `<script>盗む()</script>` のような投稿をして、それを見た他のユーザーのCookie (ログイン情報) を盗む、といった攻撃が典型的です。
対策は「ユーザー入力を画面に出すときに、HTMLとして無害化 (エスケープ) する」こと。多くのフレームワークでは標準で対策されています。
Example
2005年MySpaceワーム「Samy」: 1人の投稿が見るだけで他人のプロフィールにコピーされ、24時間で100万人に感染した有名事件。
Related tags
Denial of Service8914
SQL Injection4105
Remote Code Execution3036
Path Traversal2142
Privilege Escalation1586
Cross-Site Request Forgery1115
Server-Side Request Forgery887
Authentication Bypass882
Insecure Deserialization784
Buffer Overflow77
Command Injection28
Use After Free20
Credential Leak14
Prototype Pollution7
Integer Overflow7
Vulnerabilities tagged with this 8,597
- Medium 6.4 Cross-Site Scripting (XSS) in Insert Headers and Footers Code – HT Script (WordPress plugin) Cross-site scripting in Insert Headers and Footers Code – HT Script (WordPress plugin) (CVE-2025-12112). Risk of unauthorized operations or information disclosure. CVE-2025-12112
- Medium 5.4 Cross-Site Scripting (XSS) in IBM Sterling B2B Integrator Cross-site scripting in IBM Sterling B2B Integrator (CVE-2025-36135). Risk of unauthorized operations or information disclosure. CVE-2025-36135
- Medium 5.4 Cross-Site Scripting (XSS) in Qnap Qts Cross-site scripting in Qnap Qts (CVE-2025-58465). Risk of unauthorized operations or information disclosure. CVE-2025-58465
- Medium 5.4 Cross-Site Scripting (XSS) in File Station Cross-site scripting in File Station (CVE-2025-57706). Risk of unauthorized operations or information disclosure. CVE-2025-57706
- Medium 4.8 Cross-Site Scripting (XSS) in QuLog Center Cross-site scripting in QuLog Center (CVE-2025-54168). Risk of unauthorized operations or information disclosure. CVE-2025-54168
- Unrated Cross-Site Scripting (XSS) in Notification Center Cross-site scripting in Notification Center (CVE-2025-54167). Risk of unauthorized operations or information disclosure. CVE-2025-54167
- Medium 4.0 Cross-Site Scripting (XSS) in WP Airbnb Review Slider (WordPress plugin) Cross-site scripting in WP Airbnb Review Slider (WordPress plugin) (CVE-2025-12520). Risk of unauthorized operations or information disclosure. CVE-2025-12520
- Critical 9.0 Cross-Site Scripting (XSS) in Oxygenz Cross-site scripting in Oxygenz (CVE-2025-64338). Successful exploitation can lead to full system takeover. CVE-2025-64338
- Medium 6.9 Cross-Site Scripting (XSS) in Nuxt DevTools Cross-site scripting in Nuxt DevTools (CVE-2025-52662). Data can be tampered with by attackers. CVE-2025-52662
- High 8.8 Heimdall Data Database Proxy Cross-Site Scripting Remote Code Execution Vulnerability. This vulnerability allows remote… Cross-site scripting reported (CVE-2025-12486). Successful exploitation can lead to full system takeover. CVE-2025-12486
- Medium 5.4 Cross-Site Scripting (XSS) in Advantech WebAccess/VPN Cross-site scripting in Advantech WebAccess/VPN (CVE-2025-34237). Risk of unauthorized operations or information disclosure. CVE-2025-34237
- Medium 5.4 Cross-Site Scripting (XSS) in Advantech WebAccess/VPN Cross-site scripting in Advantech WebAccess/VPN (CVE-2025-34236). Risk of unauthorized operations or information disclosure. CVE-2025-34236
- High 7.1 Cross-Site Scripting (XSS) in Simple Payment Cross-site scripting in Simple Payment (CVE-2025-62076). Risk of unauthorized operations or information disclosure. CVE-2025-62076
- High 7.1 Cross-Site Scripting (XSS) in Houzez Theme - Functionality Cross-site scripting in Houzez Theme - Functionality (CVE-2025-62057). Risk of unauthorized operations or information disclosure. CVE-2025-62057
- High 7.1 Cross-Site Scripting (XSS) in SureRank Cross-site scripting in SureRank (CVE-2025-62059). Risk of unauthorized operations or information disclosure. CVE-2025-62059
- High 7.1 Cross-Site Scripting (XSS) in WPMobile.App Cross-site scripting in WPMobile.App (CVE-2025-62074). Risk of unauthorized operations or information disclosure. CVE-2025-62074
- Medium 6.5 Cross-Site Scripting (XSS) in UDesign Core Cross-site scripting in UDesign Core (CVE-2025-62051). Risk of unauthorized operations or information disclosure. CVE-2025-62051
- High 7.1 Cross-Site Scripting (XSS) in YOP Poll Cross-site scripting in YOP Poll (CVE-2025-62040). Risk of unauthorized operations or information disclosure. CVE-2025-62040
- Medium 6.5 Cross-Site Scripting (XSS) in TheGem Theme Elements Cross-site scripting in TheGem Theme Elements (CVE-2025-62044). Risk of unauthorized operations or information disclosure. CVE-2025-62044
- High 7.1 Cross-Site Scripting (XSS) in TheGem Cross-site scripting in TheGem (CVE-2025-62041). Risk of unauthorized operations or information disclosure. CVE-2025-62041
- Medium 6.5 Cross-Site Scripting (XSS) in tagDiv Cloud Library Cross-site scripting in tagDiv Cloud Library (CVE-2025-62032). Risk of unauthorized operations or information disclosure. CVE-2025-62032
- High 7.1 Cross-Site Scripting (XSS) in tagDiv Composer Cross-site scripting in tagDiv Composer (CVE-2025-62031). Risk of unauthorized operations or information disclosure. CVE-2025-62031
- Medium 6.5 Cross-Site Scripting (XSS) in tagDiv Composer Cross-site scripting in tagDiv Composer (CVE-2025-62030). Risk of unauthorized operations or information disclosure. CVE-2025-62030
- High 7.1 Cross-Site Scripting (XSS) in Togo Cross-site scripting in Togo (CVE-2025-62036). Risk of unauthorized operations or information disclosure. CVE-2025-62036
- Medium 6.5 Cross-Site Scripting (XSS) in TheGem Cross-site scripting in TheGem (CVE-2025-62012). Risk of unauthorized operations or information disclosure. CVE-2025-62012
- High 7.1 Vulnerability in TableOn CVE-2025-60244
- Medium 6.5 Cross-Site Scripting (XSS) in TheGem Cross-site scripting in TheGem (CVE-2025-62011). Risk of unauthorized operations or information disclosure. CVE-2025-62011
- High 7.1 Cross-Site Scripting (XSS) in GoStore Cross-site scripting in GoStore (CVE-2025-59556). Risk of unauthorized operations or information disclosure. CVE-2025-59556
- High 7.1 Cross-Site Scripting (XSS) in Institutions Directory Cross-site scripting in Institutions Directory (CVE-2025-58638). Risk of unauthorized operations or information disclosure. CVE-2025-58638
- High 7.1 Cross-Site Scripting (XSS) in Enzy Cross-site scripting in Enzy (CVE-2025-58964). Risk of unauthorized operations or information disclosure. CVE-2025-58964