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 WordPress Cross-site scripting in WordPress (CVE-2025-12090). Risk of unauthorized operations or information disclosure. CVE-2025-12090
- Medium 6.4 Cross-Site Scripting (XSS) in Schema & Structured Data for WP & AMP (WordPress plugin) Cross-site scripting in Schema & Structured Data for WP & AMP (WordPress plugin) (CVE-2025-11502). Risk of unauthorized operations or information disclosure. CVE-2025-11502
- High 7.2 Cross-Site Scripting (XSS) in Community Events (WordPress plugin) Cross-site scripting in Community Events (WordPress plugin) (CVE-2025-11995). Risk of unauthorized operations or information disclosure. CVE-2025-11995
- Medium 4.4 Cross-Site Scripting (XSS) in WordPress Cross-site scripting in WordPress (CVE-2025-11927). Risk of unauthorized operations or information disclosure. CVE-2025-11927
- Medium 6.4 Cross-Site Scripting (XSS) in Schema Scalpel (WordPress plugin) Cross-site scripting in Schema Scalpel (WordPress plugin) (CVE-2025-12118). Risk of unauthorized operations or information disclosure. CVE-2025-12118
- Medium 4.4 Cross-Site Scripting (XSS) in CSS & JavaScript Toolbox (WordPress plugin) Cross-site scripting in CSS & JavaScript Toolbox (WordPress plugin) (CVE-2025-11928). Risk of unauthorized operations or information disclosure. CVE-2025-11928
- Medium 6.4 Cross-Site Scripting (XSS) in Inactive Logout (WordPress plugin) Cross-site scripting in Inactive Logout (WordPress plugin) (CVE-2025-11922). Risk of unauthorized operations or information disclosure. CVE-2025-11922
- Medium 6.1 Cross-Site Scripting (XSS) in Liferay Portal Cross-site scripting in Liferay Portal (CVE-2025-62267). Risk of unauthorized operations or information disclosure. CVE-2025-62267
- Low 3.5 Cross-Site Scripting (XSS) in LogicalDOC Community Edition Cross-site scripting in LogicalDOC Community Edition (CVE-2025-12546). Risk of unauthorized operations or information disclosure. CVE-2025-12546
- Medium 6.1 Cross-Site Scripting (XSS) in Liferay Portal Cross-site scripting in Liferay Portal (CVE-2025-62264). Risk of unauthorized operations or information disclosure. CVE-2025-62264
- Unrated An XSS issue was discovered in Afterlogic Aurora webmail version 9.8.3 and below. An attacker can send a specially… Cross-site scripting reported (CVE-2025-12460). Risk of unauthorized operations or information disclosure. CVE-2025-12460
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2024-13992). Risk of unauthorized operations or information disclosure. CVE-2024-13992
- Medium 6.4 Cross-Site Scripting (XSS) in WordPress Cross-site scripting in WordPress (CVE-2025-11806). Risk of unauthorized operations or information disclosure. CVE-2025-11806
- Medium 6.1 Cross-Site Scripting (XSS) in Revive Adserver Cross-site scripting in Revive Adserver (CVE-2025-27208). Risk of unauthorized operations or information disclosure. CVE-2025-27208
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Network Analyzer Cross-site scripting in Nagios Network Analyzer (CVE-2025-34278). Risk of unauthorized operations or information disclosure. CVE-2025-34278
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2024-14000). Risk of unauthorized operations or information disclosure. CVE-2024-14000
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2024-14001). Risk of unauthorized operations or information disclosure. CVE-2024-14001
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Log Server Cross-site scripting in Nagios Log Server (CVE-2023-7323). Risk of unauthorized operations or information disclosure. CVE-2023-7323
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Log Server Cross-site scripting in Nagios Log Server (CVE-2023-7321). Risk of unauthorized operations or information disclosure. CVE-2023-7321
- Medium 6.1 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2024-13993). Risk of unauthorized operations or information disclosure. CVE-2024-13993
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2023-7315). Risk of unauthorized operations or information disclosure. CVE-2023-7315
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2023-7316). Risk of unauthorized operations or information disclosure. CVE-2023-7316
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2023-7318). Risk of unauthorized operations or information disclosure. CVE-2023-7318
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Network Analyzer Cross-site scripting in Nagios Network Analyzer (CVE-2023-7319). Risk of unauthorized operations or information disclosure. CVE-2023-7319
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2023-7313). Risk of unauthorized operations or information disclosure. CVE-2023-7313
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2023-7314). Risk of unauthorized operations or information disclosure. CVE-2023-7314
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2022-50588). Risk of unauthorized operations or information disclosure. CVE-2022-50588
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2022-50587). Risk of unauthorized operations or information disclosure. CVE-2022-50587
- Medium 4.8 Cross-Site Scripting (XSS) in Nagios Fusion Cross-site scripting in Nagios Fusion (CVE-2023-53689). Risk of unauthorized operations or information disclosure. CVE-2023-53689
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2023-53688). Risk of unauthorized operations or information disclosure. CVE-2023-53688