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 8,588
- Medium 6.3 Cross-Site Scripting (XSS) in Foxit Cross-site scripting in Foxit (CVE-2025-66502). Confidential information can be exposed externally. CVE-2025-66502
- High 8.2 Cross-Site Scripting (XSS) in Office Out-of-Box Experience Cross-site scripting in Office Out-of-Box Experience (CVE-2025-64677). Confidential information can be exposed externally. CVE-2025-64677
- Medium 5.4 Cross-Site Scripting (XSS) in Craigtaub Cross-site scripting in Craigtaub (CVE-2025-63947). Risk of unauthorized operations or information disclosure. CVE-2025-63947
- Medium 6.1 Cross-Site Scripting (XSS) in Yohanawi Cross-site scripting in Yohanawi (CVE-2025-63949). Risk of unauthorized operations or information disclosure. CVE-2025-63949
- Medium 6.1 Cross-Site Scripting (XSS) in Zohocorp ManageEngine Applications Manager Cross-site scripting in Zohocorp ManageEngine Applications Manager (CVE-2025-9787). Confidential information can be exposed externally. CVE-2025-9787
- Medium 4.7 Cross-Site Scripting (XSS) in Nozominetworks Cross-site scripting in Nozominetworks (CVE-2025-40891). Risk of unauthorized operations or information disclosure. CVE-2025-40891
- High 8.1 Cross-Site Scripting (XSS) in Return Policy" configuration field Cross-site scripting in Return Policy" configuration field (CVE-2025-68147). Confidential information can be exposed externally. CVE-2025-68147
- Medium 5.4 Cross-Site Scripting (XSS) in ChurchCRM Cross-site scripting in ChurchCRM (CVE-2025-67875). Risk of unauthorized operations or information disclosure. CVE-2025-67875
- Critical 9.6 Cross-Site Scripting (XSS) in DriveLock Operations Center Cross-site scripting in DriveLock Operations Center (CVE-2025-67787). Confidential information can be exposed externally. CVE-2025-67787
- Medium 6.1 Cross-Site Scripting (XSS) in SLiMS Cross-site scripting in SLiMS (CVE-2025-65233). Risk of unauthorized operations or information disclosure. CVE-2025-65233
- Medium 6.1 Cross-Site Scripting (XSS) in Sale Cross-site scripting in Sale (CVE-2025-66924). Risk of unauthorized operations or information disclosure. CVE-2025-66924
- High 7.2 Vulnerability in Sale CVE-2025-66923
- High 7.2 Vulnerability in Sale CVE-2025-66921
- Medium 6.3 Cross-Site Scripting (XSS) in OBS (Student Affairs Information System)0 Cross-site scripting in OBS (Student Affairs Information System)0 (CVE-2025-14347). Confidential information can be exposed externally. CVE-2025-14347
- High 7.1 Cross-Site Scripting (XSS) in Crafty Controller Cross-site scripting in Crafty Controller (CVE-2025-14701). Confidential information can be exposed externally. CVE-2025-14701
- Medium 6.1 Cross-Site Scripting (XSS) in nopCommerce Cross-site scripting in nopCommerce (CVE-2025-65592). Risk of unauthorized operations or information disclosure. CVE-2025-65592
- Medium 5.4 Cross-Site Scripting (XSS) in nopCommerce Cross-site scripting in nopCommerce (CVE-2025-65591). Risk of unauthorized operations or information disclosure. CVE-2025-65591
- Medium 5.4 Cross-Site Scripting (XSS) in nopCommerce Cross-site scripting in nopCommerce (CVE-2025-65590). Risk of unauthorized operations or information disclosure. CVE-2025-65590
- Medium 6.1 Cross-Site Scripting (XSS) in nopCommerce Cross-site scripting in nopCommerce (CVE-2025-65589). Risk of unauthorized operations or information disclosure. CVE-2025-65589
- Medium 6.5 Cross-Site Scripting (XSS) in Glpi Cross-site scripting in Glpi (CVE-2025-59935). Confidential information can be exposed externally. CVE-2025-59935
- Medium 6.5 Cross-Site Scripting (XSS) in VK Google Job Posting Manager Cross-site scripting in VK Google Job Posting Manager (CVE-2025-68070). Risk of unauthorized operations or information disclosure. CVE-2025-68070
- Medium 6.1 Cross-Site Scripting (XSS) in Parse Server's password reset Cross-site scripting in Parse Server's password reset (CVE-2025-68115). Risk of unauthorized operations or information disclosure. CVE-2025-68115
- Medium 6.5 Vulnerability in ChurchCRM CVE-2025-67874
- Critical 9.6 Code Injection in DeepChat CVE-2025-67744
- Low 2.4 Cross-Site Scripting (XSS) in vion707 DMadmin Cross-site scripting in vion707 DMadmin (CVE-2025-14722). Risk of unauthorized operations or information disclosure. CVE-2025-14722
- Medium 5.4 Cross-Site Scripting (XSS) in grav Cross-site scripting in grav (CVE-2025-66843). Risk of unauthorized operations or information disclosure. CVE-2025-66843
- Medium 6.4 Cross-Site Scripting (XSS) in LearnPress – WordPress LMS Plugin (WordPress plugin) Cross-site scripting in LearnPress – WordPress LMS Plugin (WordPress plugin) (CVE-2025-14387). Risk of unauthorized operations or information disclosure. CVE-2025-14387
- Medium 6.4 Cross-Site Scripting (XSS) in WordPress Cross-site scripting in WordPress (CVE-2025-13367). Risk of unauthorized operations or information disclosure. CVE-2025-13367
- Medium 6.4 Cross-Site Scripting (XSS) in CC Child Pages (WordPress plugin) Cross-site scripting in CC Child Pages (WordPress plugin) (CVE-2025-13608). Risk of unauthorized operations or information disclosure. CVE-2025-13608
- Medium 6.4 Cross-Site Scripting (XSS) in WordPress Cross-site scripting in WordPress (CVE-2025-13610). Risk of unauthorized operations or information disclosure. CVE-2025-13610