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 8,602
- 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-2022-50586). Risk of unauthorized operations or information disclosure. CVE-2022-50586
- 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 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
- Medium 4.8 Cross-Site Scripting (XSS) in Nagios Fusion Cross-site scripting in Nagios Fusion (CVE-2023-53690). Risk of unauthorized operations or information disclosure. CVE-2023-53690
- 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 4.8 Cross-Site Scripting (XSS) in Nagios Fusion Cross-site scripting in Nagios Fusion (CVE-2023-7312). Risk of unauthorized operations or information disclosure. CVE-2023-7312
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2020-36864). Risk of unauthorized operations or information disclosure. CVE-2020-36864
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2020-36865). Risk of unauthorized operations or information disclosure. CVE-2020-36865
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2020-36866). Risk of unauthorized operations or information disclosure. CVE-2020-36866
- Medium 6.1 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2020-36862). Risk of unauthorized operations or information disclosure. CVE-2020-36862
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Log Server Cross-site scripting in Nagios Log Server (CVE-2020-36858). Risk of unauthorized operations or information disclosure. CVE-2020-36858
- Medium 6.1 Cross-Site Scripting (XSS) in Nagios Fusion Cross-site scripting in Nagios Fusion (CVE-2017-20209). Risk of unauthorized operations or information disclosure. CVE-2017-20209
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2016-15052). Risk of unauthorized operations or information disclosure. CVE-2016-15052
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2018-25121). Risk of unauthorized operations or information disclosure. CVE-2018-25121
- Medium 6.1 Cross-Site Scripting (XSS) in Nagios Fusion Cross-site scripting in Nagios Fusion (CVE-2018-25119). Risk of unauthorized operations or information disclosure. CVE-2018-25119
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2016-15053). Risk of unauthorized operations or information disclosure. CVE-2016-15053
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2016-15051). Risk of unauthorized operations or information disclosure. CVE-2016-15051
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Log Server Cross-site scripting in Nagios Log Server (CVE-2016-15049). Risk of unauthorized operations or information disclosure. CVE-2016-15049
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2013-10074). Risk of unauthorized operations or information disclosure. CVE-2013-10074
- Medium 6.1 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2013-10071). Risk of unauthorized operations or information disclosure. CVE-2013-10071
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2011-10036). Risk of unauthorized operations or information disclosure. CVE-2011-10036
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2011-10037). Risk of unauthorized operations or information disclosure. CVE-2011-10037
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2011-10038). Risk of unauthorized operations or information disclosure. CVE-2011-10038
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2011-10039). Risk of unauthorized operations or information disclosure. CVE-2011-10039
- Medium 5.4 Cross-Site Scripting (XSS) in Nagios Xi Cross-site scripting in Nagios Xi (CVE-2011-10040). Risk of unauthorized operations or information disclosure. CVE-2011-10040
- Medium 5.4 Cross-Site Scripting (XSS) in Liferay Portal Cross-site scripting in Liferay Portal (CVE-2025-62265). Risk of unauthorized operations or information disclosure. CVE-2025-62265
- High 8.0 Cross-Site Scripting (XSS) in Laravel Collections Cross-site scripting in Laravel Collections (CVE-2025-64112). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 5.22.1 or later. CVE-2025-64112
- Medium 5.4 Cross-Site Scripting (XSS) in Dell Policy Manager For Secure Connect Gateway Cross-site scripting in Dell Policy Manager For Secure Connect Gateway (CVE-2025-36592). Risk of unauthorized operations or information disclosure. CVE-2025-36592