Common Weakness Enumeration

CWE-79

Allowed

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Abstraction: Base · Status: Stable

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.

67078 vulnerabilities reference this CWE, most recent first.

CVE-2025-15549 (GCVE-0-2025-15549)

Vulnerability from cvelistv5 – Published: 2026-01-29 19:41 – Updated: 2026-05-12 11:08
VLAI
Title
FluentCMS 2026 Stored XSS via SVG Upload in File Management
Summary
FluentCMS 2026 contains a stored cross-site scripting vulnerability that allows authenticated administrators to upload SVG files with embedded JavaScript via the File Management module. Attackers can upload malicious SVG files that execute JavaScript in the browser of any user accessing the uploaded file URL.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
FluentCMS FluentCMS Affected: 0 , ≤ 0.0.5 (semver)
Create a notification for this product.
Credits
Jarosław Wawiórko Beatriz Fresno Naumova
Show details on NVD website

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CVE-2025-15522 (GCVE-0-2025-15522)

Vulnerability from cvelistv5 – Published: 2026-01-23 04:34 – Updated: 2026-04-08 16:48
VLAI
Title
Uncanny Automator – Easy Automation, Integration, Webhooks & Workflow Builder Plugin <= 6.10.0.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
Summary
The Uncanny Automator – Easy Automation, Integration, Webhooks & Workflow Builder Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the automator_discord_user_mapping shortcode in all versions up to, and including, 6.10.0.2 due to insufficient input sanitization and output escaping on the verified_message parameter. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user with a verified Discord account accesses the injected page.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
Credits
Djaidja Moundjid
Show details on NVD website

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CVE-2025-15505 (GCVE-0-2025-15505)

Vulnerability from cvelistv5 – Published: 2026-01-11 01:32 – Updated: 2026-02-23 08:28
VLAI
Title
Luxul XWR-600 Web Administration cross site scripting
Summary
A vulnerability was found in Luxul XWR-600 up to 4.0.1. The affected element is an unknown function of the component Web Administration Interface. The manipulation of the argument Guest Network/Wireless Profile SSID results in cross site scripting. The attack may be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond with a technical statement.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/?id.340435 vdb-entrytechnical-description
https://vuldb.com/?ctiid.340435 signaturepermissions-required
https://vuldb.com/?submit.727924 third-party-advisory
https://docs.google.com/document/d/1S2f5lT0b-KE9m… exploit
Impacted products
Vendor Product Version
Luxul XWR-600 Affected: 4.0.0
Affected: 4.0.1
Create a notification for this product.
Credits
AppSecHuntr (VulDB User)
Show details on NVD website

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CVE-2025-15486 (GCVE-0-2025-15486)

Vulnerability from cvelistv5 – Published: 2026-01-14 05:28 – Updated: 2026-04-08 17:33
VLAI
Title
Kunze Law <= 2.1 - Authenticated (Administrator+) Stored Cross-Site Scripting
Summary
The Kunze Law plugin for WordPress is vulnerable to Stored Cross-Site Scripting via plugin's shortcode in all versions up to, and including, 2.1 due to the plugin fetching HTML content from a remote server and injecting it into pages without any sanitization or escaping. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled. Additional presence of a path traversal vulnerability in the shortcode name allows writing malicious HTML files to arbitrary writable locations on the server.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
Impacted products
Vendor Product Version
kunzemarketing Kunze Law Affected: 0 , ≤ 2.1 (semver)
Create a notification for this product.
Credits
ZAST.AI
Show details on NVD website

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CVE-2025-15483 (GCVE-0-2025-15483)

Vulnerability from cvelistv5 – Published: 2026-02-14 06:42 – Updated: 2026-04-08 17:21
VLAI
Title
Link Hopper <= 2.5 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'hop_name' Parameter
Summary
The Link Hopper plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘hop_name’ parameter in all versions up to, and including, 2.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
Impacted products
Vendor Product Version
ajferg Link Hopper Affected: 0 , ≤ 2.5 (semver)
Create a notification for this product.
Credits
ZAST.AI
Show details on NVD website

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CVE-2025-15454 (GCVE-0-2025-15454)

Vulnerability from cvelistv5 – Published: 2026-01-05 03:02 – Updated: 2026-02-23 08:16 X_Open Source
VLAI
Title
zhanglun lettura RSS ContentRender.tsx cross site scripting
Summary
A vulnerability was detected in zhanglun lettura up to 0.1.22. This issue affects some unknown processing of the file src/components/ArticleView/ContentRender.tsx of the component RSS Handler. The manipulation results in cross site scripting. The attack can be executed remotely. This attack is characterized by high complexity. The exploitability is assessed as difficult. The exploit is now public and may be used. The patch is identified as 67213093db9923e828a6e3fd8696a998c85da2d4. It is best practice to apply a patch to resolve this issue.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Vendor Product Version
zhanglun lettura Affected: 0.1.0
Affected: 0.1.1
Affected: 0.1.2
Affected: 0.1.3
Affected: 0.1.4
Affected: 0.1.5
Affected: 0.1.6
Affected: 0.1.7
Affected: 0.1.8
Affected: 0.1.9
Affected: 0.1.10
Affected: 0.1.11
Affected: 0.1.12
Affected: 0.1.13
Affected: 0.1.14
Affected: 0.1.15
Affected: 0.1.16
Affected: 0.1.17
Affected: 0.1.18
Affected: 0.1.19
Affected: 0.1.20
Affected: 0.1.21
Affected: 0.1.22
Create a notification for this product.
Credits
cranb3rry (VulDB User)
Show details on NVD website

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CVE-2025-15452 (GCVE-0-2025-15452)

Vulnerability from cvelistv5 – Published: 2026-01-05 02:02 – Updated: 2026-02-23 08:15
VLAI
Title
xnx3 wangmarket Backend Variable Search variableList.do variableList cross site scripting
Summary
A weakness has been identified in xnx3 wangmarket up to 4.9. This affects the function variableList of the file /admin/system/variableList.do of the component Backend Variable Search. Executing a manipulation of the argument Description can lead to cross site scripting. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/?id.339485 vdb-entrytechnical-description
https://vuldb.com/?ctiid.339485 signaturepermissions-required
https://vuldb.com/?submit.724840 third-party-advisory
https://www.yuque.com/cocount-eveo/lu0220/flbu025… exploit
Impacted products
Vendor Product Version
xnx3 wangmarket Affected: 4.0
Affected: 4.1
Affected: 4.2
Affected: 4.3
Affected: 4.4
Affected: 4.5
Affected: 4.6
Affected: 4.7
Affected: 4.8
Affected: 4.9
Create a notification for this product.
Credits
eveo (VulDB User)
Show details on NVD website

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CVE-2025-15451 (GCVE-0-2025-15451)

Vulnerability from cvelistv5 – Published: 2026-01-05 01:32 – Updated: 2026-02-23 08:15
VLAI
Title
xnx3 wangmarket System Variables variableSave.do cross site scripting
Summary
A security flaw has been discovered in xnx3 wangmarket up to 4.9. Affected by this issue is some unknown functionality of the file /admin/system/variableSave.do of the component System Variables Page. Performing a manipulation of the argument Description results in cross site scripting. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/?id.339484 vdb-entrytechnical-description
https://vuldb.com/?ctiid.339484 signaturepermissions-required
https://vuldb.com/?submit.724838 third-party-advisory
https://www.yuque.com/cocount-eveo/lu0220/eg6s9gr… exploit
Impacted products
Vendor Product Version
xnx3 wangmarket Affected: 4.0
Affected: 4.1
Affected: 4.2
Affected: 4.3
Affected: 4.4
Affected: 4.5
Affected: 4.6
Affected: 4.7
Affected: 4.8
Affected: 4.9
Create a notification for this product.
Credits
eveo (VulDB User)
Show details on NVD website

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CVE-2025-15440 (GCVE-0-2025-15440)

Vulnerability from cvelistv5 – Published: 2026-02-11 08:26 – Updated: 2026-04-08 16:32
VLAI
Title
iONE360 configurator <= 2.0.57 - Unauthenticated Stored Cross-Site Scripting via Contact Form Parameters
Summary
The iONE360 configurator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Contact Form Parameters in all versions up to, and including, 2.0.57 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
Impacted products
Vendor Product Version
ione360 iONE360 configurator Affected: 0 , ≤ 2.0.57 (semver)
Create a notification for this product.
Credits
Bhumividh Treloges
Show details on NVD website

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CVE-2025-15437 (GCVE-0-2025-15437)

Vulnerability from cvelistv5 – Published: 2026-01-02 08:32 – Updated: 2026-02-23 08:09 X_Open Source
VLAI
Title
LigeroSmart Environment Variable cross site scripting
Summary
A vulnerability was found in LigeroSmart up to 6.1.24. This affects an unknown part of the component Environment Variable Handler. Performing a manipulation of the argument REQUEST_URI results in cross site scripting. The attack may be initiated remotely. The exploit has been made public and could be used. Upgrading to version 6.1.26 and 6.3 is able to mitigate this issue. The patch is named 264ac5b2be5b3c673ebd8cb862e673f5d300d9a7. The affected component should be upgraded.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Vendor Product Version
n/a LigeroSmart Affected: 6.1.0
Affected: 6.1.1
Affected: 6.1.2
Affected: 6.1.3
Affected: 6.1.4
Affected: 6.1.5
Affected: 6.1.6
Affected: 6.1.7
Affected: 6.1.8
Affected: 6.1.9
Affected: 6.1.10
Affected: 6.1.11
Affected: 6.1.12
Affected: 6.1.13
Affected: 6.1.14
Affected: 6.1.15
Affected: 6.1.16
Affected: 6.1.17
Affected: 6.1.18
Affected: 6.1.19
Affected: 6.1.20
Affected: 6.1.21
Affected: 6.1.22
Affected: 6.1.23
Affected: 6.1.24
Unaffected: 6.1.26
Unaffected: 6.3
Credits
chor4o (VulDB User)
Show details on NVD website

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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-23T08:09:16.451Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-339364 | LigeroSmart Environment Variable cross site scripting",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.339364"
        },
        {
          "name": "VDB-339364 | CTI Indicators (IOB, IOC, TTP, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.339364"
        },
        {
          "name": "Submit #729021 | LigeroSmart 6.1.24 Cross Site Scripting",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/?submit.729021"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/LigeroSmart/ligerosmart/issues/278"
        },
        {
          "tags": [
            "exploit",
            "issue-tracking"
          ],
          "url": "https://github.com/LigeroSmart/ligerosmart/issues/278#issuecomment-3675129508"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/LigeroSmart/ligerosmart/commit/264ac5b2be5b3c673ebd8cb862e673f5d300d9a7"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/LigeroSmart/ligerosmart/releases/tag/6.1.26"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/LigeroSmart/ligerosmart/"
        }
      ],
      "tags": [
        "x_open-source"
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-01-01T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-01-01T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-01-07T10:32:43.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "LigeroSmart Environment Variable cross site scripting"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2025-15437",
    "datePublished": "2026-01-02T08:32:06.186Z",
    "dateReserved": "2026-01-01T18:32:26.321Z",
    "dateUpdated": "2026-02-23T08:09:16.451Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Mitigation MIT-4
Architecture and Design

Strategy: Libraries or Frameworks

  • Use 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.
Mitigation
Implementation Architecture and Design
  • Understand 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 encoding strategies.
  • For any data that will be output to another web page, especially any data that was received from external inputs, use the appropriate encoding on all non-alphanumeric characters.
  • Parts of the same output document may require different encodings, which will vary depending on whether the output is in the:
  • etc. Note that HTML Entity Encoding is only appropriate for the HTML body.
  • Consult the XSS Prevention Cheat Sheet [REF-724] for more details on the types of encoding and escaping that are needed.
  • HTML body
  • Element attributes (such as src="XYZ")
  • URIs
  • JavaScript sections
  • Cascading Style Sheets and style property
Mitigation MIT-6
Architecture and Design Implementation

Strategy: Attack Surface Reduction

Understand 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 through API calls.

Mitigation MIT-15
Architecture and Design

For 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.

Mitigation MIT-27
Architecture and Design

Strategy: Parameterization

If 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.

Mitigation MIT-30.1
Implementation

Strategy: Output Encoding

  • Use and specify an output encoding that can be handled by the downstream component that is reading the output. Common encodings include ISO-8859-1, UTF-7, and UTF-8. When an encoding is not specified, a downstream component may choose a different encoding, either by assuming a default encoding or automatically inferring which encoding is being used, which can be erroneous. When the encodings are inconsistent, the downstream component might treat some character or byte sequences as special, even if they are not special in the original encoding. Attackers might then be able to exploit this discrepancy and conduct injection attacks; they even might be able to bypass protection mechanisms that assume the original encoding is also being used by the downstream component.
  • The problem of inconsistent output encodings often arises in web pages. If an encoding is not specified in an HTTP header, web browsers often guess about which encoding is being used. This can open up the browser to subtle XSS attacks.
Mitigation MIT-43
Implementation

With Struts, write all data from form beans with the bean's filter attribute set to true.

Mitigation MIT-31
Implementation

Strategy: Attack Surface Reduction

To help mitigate XSS attacks against the user's session cookie, set the session cookie to be HttpOnly. In browsers that support the HttpOnly feature (such as more recent versions of Internet Explorer and Firefox), this attribute can prevent the user's session cookie from being accessible to malicious client-side scripts that use document.cookie. This is not a complete solution, since HttpOnly is not supported by all browsers. More importantly, XmlHttpRequest and other powerful browser technologies provide read access to HTTP headers, including the Set-Cookie header in which the HttpOnly flag is set.

Mitigation MIT-5
Implementation

Strategy: Input Validation

  • Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
  • When dynamically constructing web pages, use stringent allowlists that limit the character set based on the expected value of the parameter in the request. All input should be validated and cleansed, not just parameters that the user is supposed to specify, but all data in the request, including hidden fields, cookies, headers, the URL itself, and so forth. A common mistake that leads to continuing XSS vulnerabilities is to validate only fields that are expected to be redisplayed by the site. It is common to see data from the request that is reflected by the application server or the application that the development team did not anticipate. Also, a field that is not currently reflected may be used by a future developer. Therefore, validating ALL parts of the HTTP request is recommended.
  • Note that proper output encoding, escaping, and quoting is the most effective solution for preventing XSS, although input validation may provide some defense-in-depth. This is because it effectively limits what will appear in output. Input validation will not always prevent XSS, especially if you are required to support free-form text fields that could contain arbitrary characters. For example, in a chat application, the heart emoticon ("<3") would likely pass the validation step, since it is commonly used. However, it cannot be directly inserted into the web page because it contains the "<" character, which would need to be escaped or otherwise handled. In this case, stripping the "<" might reduce the risk of XSS, but it would produce incorrect behavior because the emoticon would not be recorded. This might seem to be a minor inconvenience, but it would be more important in a mathematical forum that wants to represent inequalities.
  • Even if you make a mistake in your validation (such as forgetting one out of 100 input fields), appropriate encoding is still likely to protect you from injection-based attacks. As long as it is not done in isolation, input validation is still a useful technique, since it may significantly reduce your attack surface, allow you to detect some attacks, and provide other security benefits that proper encoding does not address.
  • Ensure that you perform input validation at well-defined interfaces within the application. This will help protect the application even if a component is reused or moved elsewhere.
Mitigation MIT-21
Architecture and Design

Strategy: Enforcement by Conversion

When the set of acceptable objects, such as filenames or URLs, is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames or URLs, and reject all other inputs.

Mitigation MIT-29
Operation

Strategy: Firewall

Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].

Mitigation MIT-16
Operation Implementation

Strategy: Environment Hardening

When using PHP, configure the application so that it does not use register_globals. During implementation, develop the application so that it does not rely on this feature, but be wary of implementing a register_globals emulation that is subject to weaknesses such as CWE-95, CWE-621, and similar issues.

CAPEC-209: XSS Using MIME Type Mismatch

An adversary creates a file with scripting content but where the specified MIME type of the file is such that scripting is not expected. The adversary tricks the victim into accessing a URL that responds with the script file. Some browsers will detect that the specified MIME type of the file does not match the actual type of its content and will automatically switch to using an interpreter for the real content type. If the browser does not invoke script filters before doing this, the adversary's script may run on the target unsanitized, possibly revealing the victim's cookies or executing arbitrary script in their browser.

CAPEC-588: DOM-Based XSS

This type of attack is a form of Cross-Site Scripting (XSS) where a malicious script is inserted into the client-side HTML being parsed by a web browser. Content served by a vulnerable web application includes script code used to manipulate the Document Object Model (DOM). This script code either does not properly validate input, or does not perform proper output encoding, thus creating an opportunity for an adversary to inject a malicious script launch a XSS attack. A key distinction between other XSS attacks and DOM-based attacks is that in other XSS attacks, the malicious script runs when the vulnerable web page is initially loaded, while a DOM-based attack executes sometime after the page loads. Another distinction of DOM-based attacks is that in some cases, the malicious script is never sent to the vulnerable web server at all. An attack like this is guaranteed to bypass any server-side filtering attempts to protect users.

CAPEC-591: Reflected XSS

This type of attack is a form of Cross-Site Scripting (XSS) where a malicious script is "reflected" off a vulnerable web application and then executed by a victim's browser. The process starts with an adversary delivering a malicious script to a victim and convincing the victim to send the script to the vulnerable web application.

CAPEC-592: Stored XSS

An adversary utilizes a form of Cross-site Scripting (XSS) where a malicious script is persistently "stored" within the data storage of a vulnerable web application as valid input.

CAPEC-63: Cross-Site Scripting (XSS)

An adversary embeds malicious scripts in content that will be served to web browsers. The goal of the attack is for the target software, the client-side browser, to execute the script with the users' privilege level. An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute code and scripts. Web browsers, for example, have some simple security controls in place, but if a remote attacker is allowed to execute scripts (through injecting them in to user-generated content like bulletin boards) then these controls may be bypassed. Further, these attacks are very difficult for an end user to detect.

CAPEC-85: AJAX Footprinting

This attack utilizes the frequent client-server roundtrips in Ajax conversation to scan a system. While Ajax does not open up new vulnerabilities per se, it does optimize them from an attacker point of view. A common first step for an attacker is to footprint the target environment to understand what attacks will work. Since footprinting relies on enumeration, the conversational pattern of rapid, multiple requests and responses that are typical in Ajax applications enable an attacker to look for many vulnerabilities, well-known ports, network locations and so on. The knowledge gained through Ajax fingerprinting can be used to support other attacks, such as XSS.