Weakness (CWE)
CWE-79: Cross-site Scripting
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.
How to prevent it (8 mitigations)
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Architecture and Design
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.
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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:
- HTML body
- Element attributes (such as src="XYZ")
- URIs
- JavaScript sections
- Cascading Style Sheets and style property
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.
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Architecture and Design, Implementation
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.
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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.
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Architecture and Design
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.
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Implementation
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.
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Implementation
With Struts, write all data from form beans with the bean's filter attribute set to true.
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Implementation
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.
Source: MITRE CWE-79
2,694 results · Clear filters · Feed
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Low 3.5
givanz Vvveb Endpoint post cross site scripting
A vulnerability has been found in givanz Vvveb up to 1.0.5. This vulnerability affects unknown code of the file /vadmin123/index.php?module=content/post&type=post of the component Endpoint. The manipulation leads to cross site scripting. The attack can be ini…
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Low 3.5
givanz Vvveb edit.tpl cross site scripting
A vulnerability was identified in givanz Vvveb up to 1.0.5. This affects an unknown part of the file admin/template/content/edit.tpl. The manipulation of the argument slug leads to cross site scripting. It is possible to initiate the attack remotely. The expl…
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Low 2.4
Portabilis i-Diario Dicionário de Termos BNCC dicionario-de-termos-bncc cross site scripting
A vulnerability was identified in Portabilis i-Diario 1.6. Affected by this vulnerability is an unknown functionality of the file /dicionario-de-termos-bncc of the component Dicionário de Termos BNCC Page. The manipulation of the argument Planos de ensino lea…
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Low 2.4
Portabilis i-Diario History objetivos-de-aprendizagem-e-habilidades cross site scripting
A vulnerability was determined in Portabilis i-Diario up to 1.6. Affected is an unknown function of the file /objetivos-de-aprendizagem-e-habilidades of the component History Page. The manipulation of the argument código/objetivo habilidade leads to cross sit…
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Low 2.4
Portabilis i-Educar Editar educar_instituicao_cad.php cross site scripting
A vulnerability was found in Portabilis i-Educar up to 2.10. This issue affects some unknown processing of the file /intranet/educar_instituicao_cad.php of the component Editar Page. The manipulation of the argument neighborhood name leads to cross site scrip…
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Low 3.5
yangzongzhuan RuoYi edit cross site scripting
A vulnerability was found in yangzongzhuan RuoYi up to 4.8.1. Affected by this vulnerability is the function Edit of the file /system/notice/edit. The manipulation of the argument noticeTitle/noticeContent leads to cross site scripting. The attack can be laun…
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Low 2.4
JCG Link-net LW-N915R Wireless Basic Settings basic.asp cross site scripting
A vulnerability has been found in JCG Link-net LW-N915R 17s.20.001.908. Affected is an unknown function of the file /wireless/basic.asp of the component Wireless Basic Settings Page. The manipulation of the argument Network Name leads to cross site scripting.…
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Low 2.4
atjiu pybbs Admin Panel settings cross site scripting
A vulnerability, which was classified as problematic, was found in atjiu pybbs up to 6.0.0. This affects an unknown part of the file /api/settings of the component Admin Panel. The manipulation leads to cross site scripting. It is possible to initiate the att…
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Low 3.5
Portabilis i-Diario Informações adicionais planos-de-aula-por-areas-de-conhecimento cross site scripting
A vulnerability was found in Portabilis i-Diario up to 1.5.0 and classified as problematic. Affected by this issue is some unknown functionality of the file /planos-de-aula-por-areas-de-conhecimento/ of the component Informações adicionais. The manipulation o…
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Low 3.5
Portabilis i-Diario Registro das atividades registros-de-conteudos-por-disciplina cross site scripting
A security flaw has been discovered in Portabilis i-Diario up to 1.5.0. The affected element is an unknown function of the file /registros-de-conteudos-por-disciplina/ of the component Registro das atividades. The manipulation of the argument Registro de ativ…
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Low 3.5
Portabilis i-Diario Registro das atividades registros-de-conteudos-por-areas-de-conhecimento cross site scripting
A vulnerability was identified in Portabilis i-Diario up to 1.5.0. Impacted is an unknown function of the file /registros-de-conteudos-por-areas-de-conhecimento/ of the component Registro das atividades. The manipulation of the argument Registro de atividades…
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Low 3.5
Portabilis i-Educar educar_usuario_lst.php cross site scripting
A vulnerability, which was classified as problematic, has been found in Portabilis i-Educar up to 2.9. This issue affects some unknown processing of the file /intranet/educar_usuario_lst.php. The manipulation of the argument nm_pessoa/matricula/matricula_inte…
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Low 3.5
Portabilis i-Educar Cadastrar Vínculo funcionario_vinculo_cad.php cross site scripting
A vulnerability classified as problematic was found in Portabilis i-Educar up to 2.9. This vulnerability affects unknown code of the file /intranet/funcionario_vinculo_cad.php of the component Cadastrar Vínculo Page. The manipulation of the argument nome lead…
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Low 3.5
Datacom DM955 5GT 1200 Wireless Basic Settings cross site scripting
A vulnerability classified as problematic was found in Datacom DM955 5GT 1200 825.8010.00. Affected by this vulnerability is an unknown functionality of the component Wireless Basic Settings. The manipulation of the argument SSID leads to cross site scripting…
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Low 3.1
Protected Total WebShield Extension Block Page cross site scripting
A vulnerability was found in Protected Total WebShield Extension up to 3.2.0 on Chrome. It has been classified as problematic. This affects an unknown part of the component Block Page. The manipulation of the argument Category leads to cross site scripting. I…
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Low 2.4
macrozheng mall Add Product Page upload cross site scripting
A vulnerability has been found in macrozheng mall up to 1.0.3 and classified as problematic. Affected by this vulnerability is the function Upload of the file /minio/upload of the component Add Product Page. The manipulation of the argument File leads to cros…
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Low 3.5
Scada-LTS Virtual Data Source Property data_source_edit.shtm cross site scripting
A vulnerability classified as problematic has been found in Scada-LTS up to 2.7.8.1. This affects an unknown part of the file /data_source_edit.shtm of the component Virtual Data Source Property Handler. The manipulation of the argument Name leads to cross si…
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Low 2.4
zhenfeng13 My-Blog Category save cross site scripting
A vulnerability was found in zhenfeng13 My-Blog up to 1.0.0. It has been classified as problematic. Affected is an unknown function of the file /admin/categories/save of the component Category Handler. The manipulation of the argument categoryName leads to cr…
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Low 2.0CVE-2025-8573 Public exploit
Concrete CMS 9 through 9.4.2 is vulnerable to Stored XSS from Home Folder on Members Dashboard page
Concrete CMS versions 9 through 9.4.2 are vulnerable to Stored XSS from Home Folder on Members Dashboard page. Version 8 was not affected. A rogue admin could set up a malicious folder containing XSS to which users could be directed upon login. The Concrete …
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Low 3.5
atjiu pybbs search cross site scripting
A vulnerability, which was classified as problematic, was found in atjiu pybbs up to 6.0.0. Affected is an unknown function of the file /search. The manipulation of the argument keyword leads to cross site scripting. It is possible to launch the attack remote…
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Low 2.4
atjiu pybbs list cross site scripting
A vulnerability, which was classified as problematic, has been found in atjiu pybbs up to 6.0.0. This issue affects some unknown processing of the file /admin/user/list. The manipulation of the argument Username leads to cross site scripting. The attack may b…
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Low 2.4
atjiu pybbs list cross site scripting
A vulnerability classified as problematic was found in atjiu pybbs up to 6.0.0. This vulnerability affects unknown code of the file /admin/sensitive_word/list. The manipulation of the argument word leads to cross site scripting. The attack can be initiated re…
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Low 2.4
atjiu pybbs list cross site scripting
A vulnerability classified as problematic has been found in atjiu pybbs up to 6.0.0. This affects an unknown part of the file /admin/tag/list. The manipulation of the argument Name leads to cross site scripting. It is possible to initiate the attack remotely.…
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Low 3.5
atjiu pybbs list cross site scripting
A vulnerability was found in atjiu pybbs up to 6.0.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the file /admin/comment/list. The manipulation of the argument Username leads to cross site scripting. The attack m…
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Low 2.4CVE-2025-8550 Public exploit
atjiu pybbs list cross site scripting
A vulnerability was found in atjiu pybbs up to 6.0.0. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file /admin/topic/list. The manipulation of the argument Username leads to cross site scripting. The a…
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Low 2.4
Portabilis i-Educar educar_motivo_afastamento_cad.php cross site scripting
A vulnerability, which was classified as problematic, has been found in Portabilis i-Educar 2.10. Affected by this issue is some unknown functionality of the file /intranet/educar_motivo_afastamento_cad.php. The manipulation of the argument nm_motivo leads to…
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Low 2.4
Portabilis i-Educar edit cross site scripting
A vulnerability classified as problematic was found in Portabilis i-Educar 2.10. Affected by this vulnerability is an unknown functionality of the file /module/RegraAvaliacao/edit. The manipulation of the argument nome leads to cross site scripting. The attac…
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Low 2.4
Portabilis i-Educar educar_raca_cad.php cross site scripting
A vulnerability classified as problematic has been found in Portabilis i-Educar 2.10. Affected is an unknown function of the file /intranet/educar_raca_cad.php. The manipulation of the argument nm_raca leads to cross site scripting. It is possible to launch t…
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Low 2.4
Portabilis i-Educar empresas_cad.php cross site scripting
A vulnerability was found in Portabilis i-Educar 2.10. It has been rated as problematic. This issue affects some unknown processing of the file /intranet/empresas_cad.php. The manipulation of the argument fantasia/razao_social leads to cross site scripting. T…
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Low 2.4
Portabilis i-Educar public_uf_cad.php cross site scripting
A vulnerability was found in Portabilis i-Educar 2.10. It has been declared as problematic. This vulnerability affects unknown code of the file /intranet/public_uf_cad.php. The manipulation of the argument nome leads to cross site scripting. The attack can be…
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Low 2.4
Portabilis i-Educar public_municipio_cad.php cross site scripting
A vulnerability was found in Portabilis i-Educar 2.10. It has been classified as problematic. This affects an unknown part of the file /intranet/public_municipio_cad.php. The manipulation of the argument nome leads to cross site scripting. It is possible to i…
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Low 2.4
Portabilis i-Educar public_distrito_cad.php cross site scripting
A weakness has been identified in Portabilis i-Educar 2.10. This affects an unknown function of the file /intranet/public_distrito_cad.php. This manipulation of the argument nome causes cross site scripting. The attack is possible to be carried out remotely. …
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Low 2.4
Portabilis i-Educar novo cross site scripting
A security flaw has been discovered in Portabilis i-Educar 2.10. The impacted element is an unknown function of the file /usuarios/tipos/novo. The manipulation of the argument name/description results in cross site scripting. The attack can be executed remote…
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Low 3.5
cronoh NanoVault xrb URL main.js executeJavaScript cross site scripting
A vulnerability, which was classified as problematic, has been found in cronoh NanoVault up to 1.2.1. This issue affects the function executeJavaScript of the file /main.js of the component xrb URL Handler. The manipulation leads to cross site scripting. The …
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Low 2.0
The fragment preview functionality in Liferay Portal 7.4.3.61 through 7.4.3.132, and Liferay DXP 2024.Q4.1 through 2024…
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Low 2.4
givanz Vvveb Add Type post-types cross site scripting
A vulnerability, which was classified as problematic, has been found in givanz Vvveb up to 1.0.5. This issue affects some unknown processing of the file /vadmin123/index.php?module=settings/post-types of the component Add Type Handler. The manipulation leads …
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Low 3.5
Portabilis i-Diario Observações diario-de-observacoes cross site scripting
A vulnerability was found in Portabilis i-Diario 1.5.0. Impacted is an unknown function of the file /diario-de-observacoes/ of the component Observações. Performing a manipulation of the argument Descrição results in cross site scripting. It is possible to in…
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Low 3.5
Portabilis i-Educar educar_matricula_lst.php Gerar cross site scripting
A vulnerability classified as problematic has been found in Portabilis i-Educar 2.10. This affects the function Gerar of the file ieducar/intranet/educar_matricula_lst.php. The manipulation of the argument ref_cod_aluno leads to cross site scripting. It is po…
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Low 3.5
Portabilis i-Educar educar_servidor_cad.php cross site scripting
A vulnerability was found in Portabilis i-Educar 2.9. It has been rated as problematic. Affected by this issue is some unknown functionality of the file /intranet/educar_servidor_cad.php. The manipulation of the argument matricula leads to cross site scriptin…
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Low 3.5
Portabilis i-Educar educar_avaliacao_desempenho_cad.php cross site scripting
A vulnerability was found in Portabilis i-Educar 2.9. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file /intranet/educar_avaliacao_desempenho_cad.php. The manipulation of the argument titulo_avaliacao/…