Common Weakness Enumeration

CWE-80

Allowed

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Abstraction: Variant · Status: Incomplete

API response cwe.mitre.org

The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.

1041 vulnerabilities reference this CWE, most recent first.

CVE-2026-106147 (GCVE-0-2026-106147)

Vulnerability from cvelistv5 – Published: 2026-10-15 13:27 – Updated: 2026-10-15 18:08
VLAI
Title
Cross-Site Scripting via ListBox Bound Text in Kendo UI for jQuery
Summary
In Progress® Kendo® UI for jQuery releases starting with R1 2020 and prior to 2026.3.1015, the ListBox default item template renders the bound dataTextField value as raw HTML without encoding. An attacker who can modify the bound data can supply HTML containing event handlers that execute JavaScript in a user's browser when the affected list item is rendered. Successful exploitation can compromise the confidentiality and integrity of data accessible to the affected application. This issue is fixed in version 2026.3.1015.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 18:07 UTC
CWE
  • CWE-80 - Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Assigner
ProgressSoftware CNA under the mitre root
CNA scorecard B 78/100 over 143 records in the last 180 days details
References
Impacted products
Vendor Product Version
Progress Software Kendo UI for jQuery Affected: 2020.1.114 , < 2026.3.1015 (custom)
Create a notification for this product.
Credits
Abhishek Nandkumar Bhaskar (Abhi-Hackz)
Show details on NVD website
To clipboard 

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CVE-2026-106139 (GCVE-0-2026-106139)

Vulnerability from cvelistv5 – Published: 2026-10-10 09:23 – Updated: 2026-10-15 18:18
VLAI
Title
Cross-Site Scripting via Chart Tooltip in Kendo UI for Vue
Summary
In Progress® Kendo UI for Vue (@progress/kendo-vue-charts) starting with version 2.5.0 and prior to 16.2.0, the default Chart tooltip renders the formatted point value as raw HTML without encoding, in both the single-point and the shared tooltip. An attacker with low privileges who can influence a string value bound to the chart can supply HTML containing event handlers that execute JavaScript in a user's browser when the user hovers over the affected data point. Successful exploitation can compromise the confidentiality and integrity of data accessible to the affected application.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 18:18 UTC
CWE
  • CWE-80 - Improper neutralization of Script-Related HTML tags in a web page (basic XSS)
Assigner
ProgressSoftware CNA under the mitre root
CNA scorecard B 78/100 over 143 records in the last 180 days details
References
Impacted products
Vendor Product Version
Progress Software Kendo UI for Vue Affected: 2.5.0 , < 10.1.0 (custom)
Create a notification for this product.
Credits
Abhishek Nandkumar Bhaskar (Abhi-Hackz)
Show details on NVD website
To clipboard 

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CVE-2026-106138 (GCVE-0-2026-106138)

Vulnerability from cvelistv5 – Published: 2026-10-10 09:23 – Updated: 2026-10-15 18:17
VLAI
Title
Cross-Site Scripting via Chart Tooltip in KendoReact
Summary
In Progress® KendoReact (@progress/kendo-react-charts) starting with version 1.1.0 and prior to 16.2.0, the default Chart tooltip renders the formatted point value as raw HTML without encoding, in both the single-point and the shared tooltip. An attacker with low privileges who can influence a string value bound to the chart can supply HTML containing event handlers that execute JavaScript in a user's browser when the user hovers over the affected data point. Successful exploitation can compromise the confidentiality and integrity of data accessible to the affected application.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 18:17 UTC
CWE
  • CWE-80 - Improper neutralization of Script-Related HTML tags in a web page (basic XSS)
Assigner
ProgressSoftware CNA under the mitre root
CNA scorecard B 78/100 over 143 records in the last 180 days details
References
Impacted products
Vendor Product Version
Progress Software KendoReact Affected: 1.1.0 , < 16.2.0 (custom)
Create a notification for this product.
Credits
Abhishek Nandkumar Bhaskar (Abhi-Hackz)
Show details on NVD website
To clipboard 

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CVE-2026-105829 (GCVE-0-2026-105829)

Vulnerability from cvelistv5 – Published: 2026-10-08 14:10 – Updated: 2026-10-10 03:05
VLAI
Title
League CommonMark 1.3.0 before 2.10.2 Stored XSS via DisallowedRawHtml Bypass
Summary
League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name. Attackers can place a lone <script or <iframe line followed by a block supplying attributes like src or onload, executing stored scripts in viewers' browsers under default GFM settings.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-10 03:05 UTC
CWE
  • CWE-80 - Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6398 records in the last 180 days details
References
Impacted products
Vendor Product Version
thephpleague commonmark     cpe:2.3:a:thephpleague:commonmark:-:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-21 00:00
Credits
4n86rakam1
Show details on NVD website
To clipboard 

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CVE-2026-103585 (GCVE-0-2026-103585)

Vulnerability from cvelistv5 – Published: 2026-09-30 22:17 – Updated: 2026-10-01 15:54
VLAI
Title
attacker-controlled javascript license URL via XSS
Summary
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki MediaSearch extension allows Cross-Site Scripting (XSS). This issue affects MediaWiki MediaSearch extension: 1.46, 1.45, and 1.43.
Severity
1.2 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 15:54 UTC
CWE
  • CWE-80 - Improper neutralization of Script-Related HTML tags in a web page (basic XSS)
Assigner
wikimedia-foundation CNA under the mitre root
CNA scorecard C 69/100 over 81 records in the last 180 days details
References
Impacted products
Vendor Product Version
The Wikimedia Foundation MediaWiki MediaSearch extension Affected: 1.46
Affected: 1.45
Affected: 1.43
Create a notification for this product.
Credits
Marco Paciaroni (BomboBombone)
Show details on NVD website
To clipboard 

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CVE-2026-103584 (GCVE-0-2026-103584)

Vulnerability from cvelistv5 – Published: 2026-09-30 22:14 – Updated: 2026-10-01 15:53
VLAI
Title
attacker-controlled javascript license URL via XSS
Summary
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki CommonsMetadata extension allows Cross-Site Scripting (XSS). This issue affects MediaWiki CommonsMetadata extension: 1.46, 1.45, and 1.43.
Severity
1.1 (Low)
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:C/RE:M/U:Amber
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 15:52 UTC
CWE
  • CWE-80 - Improper neutralization of Script-Related HTML tags in a web page (basic XSS)
Assigner
wikimedia-foundation CNA under the mitre root
CNA scorecard C 69/100 over 81 records in the last 180 days details
References
Impacted products
Vendor Product Version
The Wikimedia Foundation MediaWiki CommonsMetadata extension Affected: 1.46
Affected: 1.45
Affected: 1.43
Create a notification for this product.
Credits
Marco Paciaroni (BomboBombone)
Show details on NVD website
To clipboard 

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CVE-2026-103445 (GCVE-0-2026-103445)

Vulnerability from cvelistv5 – Published: 2026-09-30 17:04 – Updated: 2026-09-30 20:01
VLAI
Title
Stored XSS through PageForms #autoedit redirect links
Summary
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Page_Forms extension allows Stored XSS. This issue affects MediaWiki Page_Forms extension: 1.46, 1.45, and 1.43.
Severity
1.2 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 18:12 UTC
CWE
  • CWE-80 - Improper neutralization of Script-Related HTML tags in a web page (basic XSS)
Assigner
wikimedia-foundation CNA under the mitre root
CNA scorecard C 69/100 over 81 records in the last 180 days details
References
Impacted products
Vendor Product Version
The Wikimedia Foundation MediaWiki Page_Forms extension Affected: 1.46
Affected: 1.45
Affected: 1.43
Create a notification for this product.
Credits
Marco Paciaroni (BomboBombone)
Show details on NVD website
To clipboard 

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CVE-2026-103444 (GCVE-0-2026-103444)

Vulnerability from cvelistv5 – Published: 2026-09-30 16:23 – Updated: 2026-09-30 20:01
VLAI
Title
Stored XSS through system messages in WikiForum
Summary
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki WikiForum extension allows Stored XSS. This issue affects MediaWiki WikiForum extension: master.
Severity
1.1 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 18:12 UTC
CWE
  • CWE-80 - Improper neutralization of Script-Related HTML tags in a web page (basic XSS)
Assigner
wikimedia-foundation CNA under the mitre root
CNA scorecard C 69/100 over 81 records in the last 180 days details
References
Impacted products
Credits
SomeRandomDeveloper
Show details on NVD website
To clipboard 

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CVE-2026-103443 (GCVE-0-2026-103443)

Vulnerability from cvelistv5 – Published: 2026-09-30 16:19 – Updated: 2026-09-30 20:01
VLAI
Title
API permits session-seeded javascript URL XSS
Summary
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Collection (Book) extension allows XSS Targeting Non-Script Elements. This issue affects MediaWiki Collection (Book) extension: 1.46, 1.45, and 1.43.
Severity
1.1 (Low)
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 18:13 UTC
CWE
  • CWE-80 - Improper neutralization of Script-Related HTML tags in a web page (basic XSS)
Assigner
wikimedia-foundation CNA under the mitre root
CNA scorecard C 69/100 over 81 records in the last 180 days details
References
Impacted products
Vendor Product Version
The Wikimedia Foundation MediaWiki Collection (Book) extension Affected: 1.46
Affected: 1.45
Affected: 1.43
Create a notification for this product.
Credits
Marco Paciaroni (BomboBombone)
Show details on NVD website
To clipboard 

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CVE-2026-103439 (GCVE-0-2026-103439)

Vulnerability from cvelistv5 – Published: 2026-09-30 17:34 – Updated: 2026-09-30 20:01
VLAI
Title
Various rawParams() and escaped() updates to prevent XSS in Wikibase extension
Summary
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Wikbase extension allows Cross-Site Scripting (XSS). This issue affects MediaWiki Wikbase extension: 1.46, 1.45, and 1.43.
Severity
0.3 (Low)
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 18:12 UTC
CWE
  • CWE-80 - Improper neutralization of Script-Related HTML tags in a web page (basic XSS)
Assigner
wikimedia-foundation CNA under the mitre root
CNA scorecard C 69/100 over 81 records in the last 180 days details
References
Impacted products
Vendor Product Version
The Wikimedia Foundation MediaWiki Wikbase extension Affected: 1.46
Affected: 1.45
Affected: 1.43
Create a notification for this product.
Show details on NVD website
To clipboard 

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Mitigation
Implementation

Carefully check each input parameter against a rigorous positive specification (allowlist) defining the specific characters and format allowed. All input should be neutralized, 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. We often encounter 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.

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.

CAPEC-18: XSS Targeting Non-Script Elements

This attack is a form of Cross-Site Scripting (XSS) where malicious scripts are embedded in elements that are not expected to host scripts such as image tags (<img>), comments in XML documents (< !-CDATA->), etc. These tags may not be subject to the same input validation, output validation, and other content filtering and checking routines, so this can create an opportunity for an adversary to tunnel through the application's elements and launch a XSS attack through other elements. As with all remote attacks, it is important to differentiate the ability to launch an attack (such as probing an internal network for unpatched servers) and the ability of the remote adversary to collect and interpret the output of said attack.

CAPEC-193: PHP Remote File Inclusion

In this pattern the adversary is able to load and execute arbitrary code remotely available from the application. This is usually accomplished through an insecurely configured PHP runtime environment and an improperly sanitized "include" or "require" call, which the user can then control to point to any web-accessible file. This allows adversaries to hijack the targeted application and force it to execute their own instructions.

CAPEC-32: XSS Through HTTP Query Strings

An adversary embeds malicious script code in the parameters of an HTTP query string and convinces a victim to submit the HTTP request that contains the query string to a vulnerable web application. The web application then procedes to use the values parameters without properly validation them first and generates the HTML code that will be executed by the victim's browser.

CAPEC-86: XSS Through HTTP Headers

An adversary exploits web applications that generate web content, such as links in a HTML page, based on unvalidated or improperly validated data submitted by other actors. XSS in HTTP Headers attacks target the HTTP headers which are hidden from most users and may not be validated by web applications.

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