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
- Low 3.5 Cross-Site Scripting (XSS) in drupal/simple_multistep Cross-site scripting in drupal/simple_multistep (CVE-2025-12761). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 2.0.0 or later. CVE-2025-12761
- Medium 5.4 Cross-Site Scripting (XSS) in Cisco Identity Services Engine Cross-site scripting in Cisco Identity Services Engine (CVE-2025-20304). Risk of unauthorized operations or information disclosure. CVE-2025-20304
- Medium 5.4 Cross-Site Scripting (XSS) in Cisco Identity Services Engine Cross-site scripting in Cisco Identity Services Engine (CVE-2025-20303). Risk of unauthorized operations or information disclosure. CVE-2025-20303
- Medium 4.8 Cross-Site Scripting (XSS) in Cisco Identity Services Engine Cross-site scripting in Cisco Identity Services Engine (CVE-2025-20289). Risk of unauthorized operations or information disclosure. CVE-2025-20289
- Medium 6.4 Vulnerability in Ad Inserter – Ad Manager & AdSense Ads (WordPress plugin) CVE-2025-11745
- Medium 6.4 Cross-Site Scripting (XSS) in Graphina – Elementor Charts and Graphs (WordPress plugin) Cross-site scripting in Graphina – Elementor Charts and Graphs (WordPress plugin) (CVE-2025-11820). Risk of unauthorized operations or information disclosure. CVE-2025-11820
- Medium 6.4 Vulnerability in Visual Link Preview (WordPress plugin) CVE-2025-11987
- Medium 6.3 Vulnerability in FunnelKit (WordPress plugin) CVE-2025-10567
- Medium 6.4 Cross-Site Scripting (XSS) in WordPress Cross-site scripting in WordPress (CVE-2025-11162). Risk of unauthorized operations or information disclosure. CVE-2025-11162
- Medium 6.1 Cross-Site Scripting (XSS) in SMS for (WordPress plugin) Cross-site scripting in SMS for (WordPress plugin) (CVE-2025-12580). Risk of unauthorized operations or information disclosure. CVE-2025-12580
- Medium 5.4 Cross-Site Scripting (XSS) in LinkAce Cross-site scripting in LinkAce (CVE-2025-62722). Risk of unauthorized operations or information disclosure. CVE-2025-62722
- Medium 5.4 Cross-Site Scripting (XSS) in ClipBucket's Collection tags feature Cross-site scripting in ClipBucket's Collection tags feature (CVE-2025-62715). Risk of unauthorized operations or information disclosure. CVE-2025-62715
- Medium 6.1 Vulnerability in Galette CVE-2025-48884
- Medium 5.4 Vulnerability in Galette CVE-2025-48076
- Medium 4.4 Cross-Site Scripting (XSS) in MeetingList (WordPress plugin) Cross-site scripting in MeetingList (WordPress plugin) (CVE-2025-12184). Risk of unauthorized operations or information disclosure. CVE-2025-12184
- Medium 6.4 Cross-Site Scripting (XSS) in WordPress Cross-site scripting in WordPress (CVE-2025-12045). Risk of unauthorized operations or information disclosure. CVE-2025-12045
- Medium 6.1 Cross-Site Request Forgery (CSRF) in Pagerank Tools (WordPress plugin) Vulnerability in Pagerank Tools (WordPress plugin) (CVE-2025-12416). Risk of unauthorized operations or information disclosure. CVE-2025-12416
- Medium 4.4 Cross-Site Scripting (XSS) in clubmember (WordPress plugin) Cross-site scripting in clubmember (WordPress plugin) (CVE-2025-12396). Risk of unauthorized operations or information disclosure. CVE-2025-12396
- Medium 6.4 Cross-Site Scripting (XSS) in Extensions for Leaflet Map (WordPress plugin) Cross-site scripting in Extensions for Leaflet Map (WordPress plugin) (CVE-2025-12369). Risk of unauthorized operations or information disclosure. Exploitable via geojsonmarker. CVE-2025-12369
- Medium 4.4 Cross-Site Scripting (XSS) in Nari Accountant (WordPress plugin) Cross-site scripting in Nari Accountant (WordPress plugin) (CVE-2025-12371). Risk of unauthorized operations or information disclosure. CVE-2025-12371
- Medium 4.4 Cross-Site Scripting (XSS) in Free Quotation (WordPress plugin) Cross-site scripting in Free Quotation (WordPress plugin) (CVE-2025-12393). Risk of unauthorized operations or information disclosure. CVE-2025-12393
- Medium 4.4 Cross-Site Scripting (XSS) in WP Carticon (WordPress plugin) Cross-site scripting in WP Carticon (WordPress plugin) (CVE-2025-12065). Risk of unauthorized operations or information disclosure. CVE-2025-12065
- Medium 6.4 Cross-Site Scripting (XSS) in Reuse Builder (WordPress plugin) Cross-site scripting in Reuse Builder (WordPress plugin) (CVE-2025-11812). Risk of unauthorized operations or information disclosure. CVE-2025-11812
- Medium 4.4 Cross-Site Scripting (XSS) in Bootstrap Multi-language Responsive Portfolio (WordPress plugin) Cross-site scripting in Bootstrap Multi-language Responsive Portfolio (WordPress plugin) (CVE-2025-11753). Risk of unauthorized operations or information disclosure. CVE-2025-11753
- High 7.2 Cross-Site Scripting (XSS) in Footnotes Made Easy (WordPress plugin) Cross-site scripting in Footnotes Made Easy (WordPress plugin) (CVE-2025-11733). Risk of unauthorized operations or information disclosure. CVE-2025-11733
- Medium 6.4 Cross-Site Scripting (XSS) in WordPress Cross-site scripting in WordPress (CVE-2025-12324). Risk of unauthorized operations or information disclosure. Exploitable via table. CVE-2025-12324
- Medium 6.4 Cross-Site Scripting (XSS) in Greenshift – animation and page builder blocks (WordPress plugin) Cross-site scripting in Greenshift – animation and page builder blocks (WordPress plugin) (CVE-2025-11841). Risk of unauthorized operations or information disclosure. CVE-2025-11841
- Medium 6.4 Cross-Site Scripting (XSS) in IBM Cloud Pak for Business Automation Cross-site scripting in IBM Cloud Pak for Business Automation (CVE-2025-36172). Risk of unauthorized operations or information disclosure. CVE-2025-36172
- High 7.1 Cross-Site Scripting (XSS) in IdentityIQ Cross-site scripting in IdentityIQ (CVE-2025-10280). Successful exploitation can lead to full system takeover. CVE-2025-10280
- Medium 6.4 Cross-Site Scripting (XSS) in kallyas (WordPress theme) Cross-site scripting in kallyas (WordPress theme) (CVE-2025-6988). Risk of unauthorized operations or information disclosure. CVE-2025-6988