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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 21902

21902 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-2024-33947 WordPress RegistrationMagic plugin <= 5.3.2.0 - Cross Site Scripting (XSS) vulnerability — RegistrationMagic 7.1 High2024-05-03
CVE-2023-51633 Centreon sysName Cross-Site Scripting Remote Code Execution Vulnerability — Centreon 8.8 -2024-05-03
CVE-2023-50231 NETGEAR ProSAFE Network Management System saveNodeLabel Cross-Site Scripting Privilege Escalation Vulnerability — ProSAFE Network Management System 6.1 -2024-05-03
CVE-2023-42034 Visualware MyConnection Server doRTAAccessCTConfig Cross-Site Scripting Authentication Bypass Vulnerability — MyConnection Server 8.8 -2024-05-03
CVE-2023-38121 Inductive Automation Ignition OPC UA Quick Client Cross-Site Scripting Remote Code Execution Vulnerability — Ignition 9.6 -2024-05-03
CVE-2023-27335 Softing edgeAggregator Client Cross-Site Scripting Remote Code Execution Vulnerability — edgeAggregator 8.3 -2024-05-03
CVE-2024-3473 Header Footer Code Manager Pro <= 1.0.16 - Reflected Cross-Site Scripting via message — Header Footer Code Manager Pro 6.1 Medium2024-05-02
CVE-2024-3681 Interactive World Maps <= 2.4.14 - Reflected Cross-Site Scripting — Interactive World Maps 6.1 Medium2024-05-02
CVE-2024-4097 Cost Calculator Builder Pro <= 3.1.67 - Unauthenticated Cross-Site Scripting via SVG Upload — Cost Calculator Builder PRO 7.2 High2024-05-02
CVE-2024-2324 FileOrganizer and FileOrganizer Pro <= 1.0.6 - Authenticated Stored Cross-Site Scripting — FileOrganizer – WordPress File Manager 4.4 Medium2024-05-02
CVE-2024-2752 Where Did You Hear About Us Checkout Field for WooCommerce <= 1.3.1 - Authenticated (Shop Manager+) Stored Cross-Site Scripting — Where Did You Hear About Us Checkout Field for WooCommerce 5.5 Medium2024-05-02
CVE-2024-3340 Colibri Page Builder <= 1.0.272 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'colibri-gallery-slideshow' Shortcode — Colibri Page Builder 5.4 Medium2024-05-02
CVE-2024-3743 Elementor Addon Elements <= 1.13.3 - Authenticated (Contributor+) Stored Cross-Site Scripting — Addon Elements for Elementor (formerly Elementor Addon Elements) 6.4 Medium2024-05-02
CVE-2023-7030 Collapse-O-Matic <= 1.8.5.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode — Collapse-O-Matic 6.4 Medium2024-05-02
CVE-2024-2273 Gutenberg Blocks by Kadence Blocks – Page Builder Features <= 3.2.34 - Authenticated (Contributor+) Stored Cross-Site Scripting — Kadence Blocks — Page Builder Toolkit for Gutenberg Editor 6.4 Medium2024-05-02
CVE-2024-4324 WP Video Lightbox <= 1.9.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via width Parameter — WP Video Lightbox 6.4 Medium2024-05-02
CVE-2024-1759 WP ULike <= 4.6.9 - Authenticated (Subscriber+) Stored Cross-Site Scripting — WP ULike – Like & Dislike Buttons for Engagement and Feedback 6.4 Medium2024-05-02
CVE-2024-4034 Virtue <= 3.4.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Author — Virtue 6.4 Medium2024-05-02
CVE-2024-2328 Real Media Library <= 4.22.11 - Authenticated (Author+) Stored Cross-Site Scripting — Real Media Library: Media Library Folder & File Manager 6.4 Medium2024-05-02
CVE-2024-2082 EleForms – All In One Form Integration including DB for Elementor <= 2.9.9.7 - Unauthenticated Stored Cross-Site Scripting — EleForms – All In One Form Integration including DB for Elementor 7.2 High2024-05-02
CVE-2024-3725 Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE <= 2.6.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'titleTag' — Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE 6.4 Medium2024-05-02
CVE-2024-1840 WPBakery Visual Composer <= 7.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Author — WPBakery Page Builder 6.4 Medium2024-05-02
CVE-2023-6961 WP Meta SEO <= 4.5.12 - Unauthenticated Stored Cross-Site Scripting via Referer header — WP Meta SEO 7.2 High2024-05-02
CVE-2024-2349 Fancy Elementor Flipbox <= 2.5.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Fancy Elementor Flipbox Widget — Fancy Elementor Flipbox 6.4 Medium2024-05-02
CVE-2024-3307 HT Mega – Absolute Addons For Elementor <= 2.4.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via Countdown Widget — HT Mega Addons for Elementor – Elementor Widgets & Template Builder 6.4 Medium2024-05-02
CVE-2024-4036 Sydney Toolbox <= 1.30 - Authenticated (Contributor+) Stored Cross-Site Scripting — Sydney Toolbox 6.4 Medium2024-05-02
CVE-2024-2401 Admin Page Spider <= 3.31 - Authenticated (Admin+) Stored Cross-Site Scripting — Admin Page Spider 4.4 Medium2024-05-02
CVE-2024-3588 Getwid – Gutenberg Blocks <= 2.0.7 - Authenticated (Contributor+) DOM-Based Stored Cross-Site Scripting via 'Countdown' — Getwid – Gutenberg Blocks 6.4 Medium2024-05-02
CVE-2024-1679 Print Labels with Barcodes. Create price tags, product labels, order labels for WooCommerce <= 3.4.6 - Authenticated(Subscriber+) Stored Cross-Site Scripting via Templates — Print Labels with Barcodes. Create price tags, product labels, order labels for WooCommerce 6.4 Medium2024-05-02
CVE-2024-4000 WordPress Header Builder Plugin – Pearl <= 1.3.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode — Pearl – Header Builder 6.4 Medium2024-05-02

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 21902 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.