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CWE-79 (在Web页面生成时对输入的转义处理不恰当(跨站脚本)) — Vulnerability Class 23507

23507 vulnerabilities classified as CWE-79 (在Web页面生成时对输入的转义处理不恰当(跨站脚本)). AI Chinese analysis included.

CWE-79 represents a critical input validation weakness where software fails to properly sanitize user-supplied data before rendering it in web pages. Attackers typically exploit this vulnerability by injecting malicious scripts, often JavaScript, into trusted websites. When other users view the compromised page, the embedded code executes in their browsers, allowing the attacker to steal session cookies, hijack accounts, or redirect victims to phishing sites. This breach of trust undermines user privacy and application integrity. To prevent such attacks, developers must implement robust input validation and output encoding strategies. By strictly filtering incoming data and ensuring that all dynamic content is properly escaped before being processed by the browser, developers can neutralize dangerous inputs and effectively mitigate the risk of cross-site scripting vulnerabilities.

MITRE CWE Description
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. There are many variants of cross-site scripting, characterized by a variety of terms or involving different attack topologies. However, they all indicate the same fundamental weakness: improper neutralization of dangerous input between the adversary and a victim.
Common Consequences (3)
Access Control, ConfidentialityBypass Protection Mechanism, Read Application Data
The most common attack performed with cross-site scripting involves the disclosure of private information stored in user cookies, such as session information. Typically, a malicious user will craft a client-side script, which -- when parsed by a web browser -- performs some activity on behalf of the…
Integrity, Confidentiality, AvailabilityExecute Unauthorized Code or Commands
In some circumstances it may be possible to run arbitrary code on a victim's computer when cross-site scripting is combined with other flaws, for example, "drive-by hacking."
Confidentiality, Integrity, Availability, Access ControlExecute Unauthorized Code or Commands, Bypass Protection Mechanism, Read Application Data
The consequence of an XSS attack is the same regardless of whether it is stored or reflected. The difference is in how the payload arrives at the server. XSS can cause a variety of problems for the end user that range in severity from an annoyance to complete account compromise. Some cross-site scri…
Mitigations (5)
Architecture and DesignUse a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482]. Examples of libraries and frameworks that make it easier to generate properly encoded output include Microsoft's Anti-XSS library, the OWASP ESAPI Encoding module, and Apache Wicket.
Implementation, Architecture and DesignUnderstand the context in which your data will be used and the encoding that will be expected. This is especially important when transmitting data between different components, or when generating outputs that can contain multiple encodings at the same time, such as web pages or multi-part mail messages. Study all expected communication protocols and data representations to determine the required e…
Architecture and Design, ImplementationUnderstand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide data to the application. Remember that such inputs may be obtained indirectly throug…
Effectiveness: Limited
Architecture and DesignFor any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Architecture and DesignIf available, use structured mechanisms that automatically enforce the separation between data and code. These mechanisms may be able to provide the relevant quoting, encoding, and validation automatically, instead of relying on the developer to provide this capability at every point where output is generated.
Examples (2)
The following code displays a welcome message on a web page based on the HTTP GET username parameter (covers a Reflected XSS (Type 1) scenario).
$username = $_GET['username']; echo '<div class="header"> Welcome, ' . $username . '</div>';
Bad · PHP
http://trustedSite.example.com/welcome.php?username=<Script Language="Javascript">alert("You've been attacked!");</Script>
Attack
The following code displays a Reflected XSS (Type 1) scenario.
<% String eid = request.getParameter("eid"); %> ... Employee ID: <%= eid %>
Bad · JSP
<% protected System.Web.UI.WebControls.TextBox Login; protected System.Web.UI.WebControls.Label EmployeeID; ... EmployeeID.Text = Login.Text; %> <p><asp:label id="EmployeeID" runat="server" /></p>
Bad · ASP.NET
CVE IDTitleCVSSSeverityPublished
CVE-2025-53523 Japan Total System GroupSession Free edition和Japan Total System GroupSession byCloud 跨站脚本漏洞 — GroupSession Free edition 5.4AIMediumAI2025-12-12
CVE-2025-54407 Japan Total System多款产品 跨站脚本漏洞 — GroupSession Free edition 5.4AIMediumAI2025-12-12
CVE-2025-66492 Masa CMS vulnerable to Cross-Site Scripting (XSS) through URL Parameter — MasaCMS 8.2 High2025-12-12
CVE-2025-14138 WPLG Default Mail From <= 1.0.0 - Reflected Cross-Site Scripting via $_SERVER['PHP_SELF'] — WPLG Default Mail From 6.1 Medium2025-12-12
CVE-2025-13975 Contact Form 7 with ChatWork <= 1.1.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'api_token' and 'roomid' Settings — Contact Form 7 with ChatWork 4.4 Medium2025-12-12
CVE-2025-13843 VigLink SpotLight By ShortCode <= 1.0.a - Authenticated (Contributor+) Stored Cross-Site Scripting via 'float' Shortcode Attribute — VigLink SpotLight By ShortCode 6.4 Medium2025-12-12
CVE-2025-13850 LS Google Map Router <= 1.1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes — LS Google Map Router 6.4 Medium2025-12-12
CVE-2025-13747 NewStatPress <= 1.4.3 - Authenticated (Contributor+) Stored Cross-Site Scripting — NewStatPress 6.4 Medium2025-12-12
CVE-2025-14137 Simple AL Slider <= 1.2.10 - Reflected Cross-Site Scripting via $_SERVER['PHP_SELF'] — Simple AL Slider 6.1 Medium2025-12-12
CVE-2025-12650 Simple post listing <= 0.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode — Simple post listing 6.4 Medium2025-12-12
CVE-2025-12830 Better Elementor Addons <= 1.5.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via Slider Widget — Better Addons for Elementor 6.4 Medium2025-12-12
CVE-2025-12834 Accept Stripe Payments Using Contact Form 7 <= 3.1 - Reflected Cross-Site Scripting via failure_message — Accept Stripe Payments Using Contact Form 7 6.1 Medium2025-12-12
CVE-2025-13963 FX Currency Converter <= 0.2.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes — FX Currency Converter 6.4 Medium2025-12-12
CVE-2025-13962 Divelogs Widget <= 1.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes — Divelogs Widget 6.4 Medium2025-12-12
CVE-2025-13885 Zenost Shortcodes <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes — Zenost Shortcodes 6.4 Medium2025-12-12
CVE-2025-14132 Category Dropdown List <= 1.0 - Reflected Cross-Site Scripting via $_SERVER['PHP_SELF'] — Category Dropdown List 6.1 Medium2025-12-12
CVE-2025-13971 TWW Protein Calculator <= 1.0.24 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Header' Setting — TWW Protein Calculator 4.4 Medium2025-12-12
CVE-2025-13988 评论小秘书 <= 1.3.2 - Reflected Cross-Site Scripting via $_SERVER['PHP_SELF'] — 评论小秘书 6.1 Medium2025-12-12
CVE-2025-13966 Paypal Payment Shortcode <= 1.01 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'buttom_image' Shortcode Attribute — Paypal Payment Shortcode 6.4 Medium2025-12-12
CVE-2025-13906 WP Flot <= 0.2.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes — WP Flot 6.4 Medium2025-12-12
CVE-2025-13884 Hide Email Address <= 0.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes — Hide Email Address 6.4 Medium2025-12-12
CVE-2025-13961 Data Visualizer <= 1.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes — Data Visualizer 6.4 Medium2025-12-12
CVE-2025-14035 DebateMaster <= 1.0.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via Color Options via 'debate' Shortcode — DebateMaster 4.4 Medium2025-12-12
CVE-2025-13840 BUKAZU Search widget <= 3.3.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'shortcode' Shortcode Attribute — Bukazu Search Widget 6.4 Medium2025-12-12
CVE-2025-13960 GPXpress <= 1.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes — GPXpress 6.4 Medium2025-12-12
CVE-2025-14032 Bold Timeline Lite <= 1.2.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'title' Parameter in 'bold_timeline_group' Shortcode — Bold Timeline Lite 6.4 Medium2025-12-12
CVE-2025-13969 Reviews Sorted <= 2.4.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'space' Shortcode Attribute — Reviews Sorted 6.4 Medium2025-12-12
CVE-2025-13846 Easy Map Creator <= 3.0.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes — Easy Map Creator 6.4 Medium2025-12-12
CVE-2025-14119 App Landing Template Blocks for WPBakery Page Builder <= 2.0.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes — App Landing Template Blocks for WPBakery (Visual Composer) Page Builder 6.4 Medium2025-12-12
CVE-2025-13904 WPGancio <= 1.12 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes — WPGancio 6.4 Medium2025-12-12

Vulnerabilities classified as CWE-79 (在Web页面生成时对输入的转义处理不恰当(跨站脚本)) represent 23507 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.