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 6.5 Cross-Site Scripting (XSS) in Zohocorp ManageEngine OpManager Cross-site scripting in Zohocorp ManageEngine OpManager (CVE-2025-9227). Risk of unauthorized operations or information disclosure. CVE-2025-9227
- Unrated Cross-Site Scripting (XSS) in NetScaler ADC and NetScaler Gateway when the appliance is configured as a Gateway (VPN… Cross-site scripting reported (CVE-2025-12101). Risk of unauthorized operations or information disclosure. CVE-2025-12101
- Unrated A security issue exists within DataMosaix™ Private Cloud allowing for Persistent XSS. This vulnerability can result in… Vulnerability reported (CVE-2025-11085). Risk of unauthorized operations or information disclosure. CVE-2025-11085
- Medium 6.1 Cross-Site Scripting (XSS) in KVKNET Cross-site scripting in KVKNET (CVE-2025-11960). Risk of unauthorized operations or information disclosure. CVE-2025-11960
- High 7.3 Cross-Site Scripting (XSS) in Zohocorp ManageEngine Exchange Reporter Plus Cross-site scripting in Zohocorp ManageEngine Exchange Reporter Plus (CVE-2025-7633). Confidential information can be exposed externally. CVE-2025-7633
- High 7.3 Cross-Site Scripting (XSS) in Zohocorp ManageEngine Exchange Reporter Plus Cross-site scripting in Zohocorp ManageEngine Exchange Reporter Plus (CVE-2025-7430). Confidential information can be exposed externally. CVE-2025-7430
- High 7.3 Cross-Site Scripting (XSS) in Zohocorp ManageEngine Exchange Reporter Plus Cross-site scripting in Zohocorp ManageEngine Exchange Reporter Plus (CVE-2025-7632). Confidential information can be exposed externally. CVE-2025-7632
- High 7.3 Cross-Site Scripting (XSS) in Zohocorp ManageEngine Exchange Reporter Plus Cross-site scripting in Zohocorp ManageEngine Exchange Reporter Plus (CVE-2025-7429). Confidential information can be exposed externally. CVE-2025-7429
- High 8.8 Vulnerability in WP Go Maps (WordPress plugin) CVE-2025-11307
- Medium 6.4 Vulnerability in Chart Expert (WordPress plugin) CVE-2025-12753
- Medium 6.4 Cross-Site Scripting (XSS) in Geopost (WordPress plugin) Cross-site scripting in Geopost (WordPress plugin) (CVE-2025-12754). Risk of unauthorized operations or information disclosure. CVE-2025-12754
- Medium 5.4 Cross-Site Scripting (XSS) in Progress Bar Blocks for Gutenberg (WordPress plugin) Cross-site scripting in Progress Bar Blocks for Gutenberg (WordPress plugin) (CVE-2025-12880). Risk of unauthorized operations or information disclosure. CVE-2025-12880
- Medium 6.4 Cross-Site Scripting (XSS) in WordPress Cross-site scripting in WordPress (CVE-2025-12667). Risk of unauthorized operations or information disclosure. CVE-2025-12667
- Medium 6.4 Cross-Site Scripting (XSS) in Share to Google Classroom (WordPress plugin) Cross-site scripting in Share to Google Classroom (WordPress plugin) (CVE-2025-12711). Risk of unauthorized operations or information disclosure. CVE-2025-12711
- Medium 6.4 Cross-Site Scripting (XSS) in Flickr Show (WordPress plugin) Cross-site scripting in Flickr Show (WordPress plugin) (CVE-2025-12672). Risk of unauthorized operations or information disclosure. CVE-2025-12672
- Medium 6.4 Cross-Site Scripting (XSS) in WP Count Down Timer (WordPress plugin) Cross-site scripting in WP Count Down Timer (WordPress plugin) (CVE-2025-12668). Risk of unauthorized operations or information disclosure. CVE-2025-12668
- Medium 6.4 Cross-Site Scripting (XSS) in WP-Iconics (WordPress plugin) Cross-site scripting in WP-Iconics (WordPress plugin) (CVE-2025-12671). Risk of unauthorized operations or information disclosure. CVE-2025-12671
- Medium 6.4 Cross-Site Scripting (XSS) in Coon Google Maps (WordPress plugin) Cross-site scripting in Coon Google Maps (WordPress plugin) (CVE-2025-12662). Risk of unauthorized operations or information disclosure. CVE-2025-12662
- Medium 6.4 Cross-Site Scripting (XSS) in Live Photos on (WordPress plugin) Cross-site scripting in Live Photos on (WordPress plugin) (CVE-2025-12651). Risk of unauthorized operations or information disclosure. CVE-2025-12651
- Medium 6.4 Cross-Site Scripting (XSS) in WordPress Cross-site scripting in WordPress (CVE-2025-12644). Risk of unauthorized operations or information disclosure. CVE-2025-12644
- Medium 6.4 Cross-Site Scripting (XSS) in Preload Current Images (WordPress plugin) Cross-site scripting in Preload Current Images (WordPress plugin) (CVE-2025-12658). Risk of unauthorized operations or information disclosure. CVE-2025-12658
- Medium 6.4 Cross-Site Scripting (XSS) in Ungapped Widgets (WordPress plugin) Cross-site scripting in Ungapped Widgets (WordPress plugin) (CVE-2025-12652). Risk of unauthorized operations or information disclosure. CVE-2025-12652
- Medium 6.4 Cross-Site Scripting (XSS) in Jeba Cute forkit (WordPress plugin) Cross-site scripting in Jeba Cute forkit (WordPress plugin) (CVE-2025-12663). Risk of unauthorized operations or information disclosure. CVE-2025-12663
- Medium 6.1 Cross-Site Request Forgery (CSRF) in WP-Walla (WordPress plugin) Vulnerability in WP-Walla (WordPress plugin) (CVE-2025-12589). Risk of unauthorized operations or information disclosure. CVE-2025-12589
- Medium 4.4 Cross-Site Scripting (XSS) in Squirrels Auto Inventory (WordPress plugin) Cross-site scripting in Squirrels Auto Inventory (WordPress plugin) (CVE-2025-12631). Risk of unauthorized operations or information disclosure. CVE-2025-12631
- Medium 6.1 Cross-Site Request Forgery (CSRF) in YSlider (WordPress plugin) Vulnerability in YSlider (WordPress plugin) (CVE-2025-12590). Risk of unauthorized operations or information disclosure. CVE-2025-12590
- Medium 5.5 Cross-Site Scripting (XSS) in RandomQuotr (WordPress plugin) Cross-site scripting in RandomQuotr (WordPress plugin) (CVE-2025-12632). Risk of unauthorized operations or information disclosure. CVE-2025-12632
- Medium 6.1 Cross-Site Scripting (XSS) in WP-OAuth (WordPress plugin) Cross-site scripting in WP-OAuth (WordPress plugin) (CVE-2025-12021). Risk of unauthorized operations or information disclosure. CVE-2025-12021
- Medium 4.4 Cross-Site Scripting (XSS) in Fleet Manager (WordPress plugin) Cross-site scripting in Fleet Manager (WordPress plugin) (CVE-2025-12538). Risk of unauthorized operations or information disclosure. CVE-2025-12538
- Medium 4.9 Cross-Site Scripting (XSS) in WordPress Cross-site scripting in WordPress (CVE-2025-12020). Risk of unauthorized operations or information disclosure. CVE-2025-12020