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
Wikimedia mediawiki-extensions-I18nTags Unlike Parser I18nTags_body.php cross site scripting
A vulnerability was found in Wikimedia mediawiki-extensions-I18nTags and classified as problematic. This issue affects some unknown processing of the file I18nTags_body.php of the component Unlike Parser. The manipulation leads to cross site scripting. The at…
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Low 3.5
snoyberg keter Proxy.hs cross site scripting
A vulnerability has been found in snoyberg keter up to 1.8.1 and classified as problematic. This vulnerability affects unknown code of the file Keter/Proxy.hs. The manipulation of the argument host leads to cross site scripting. The attack can be initiated re…
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Low 2.0
shannah Xataface Installer install_form.js.php testftp cross site scripting
A vulnerability, which was classified as problematic, has been found in shannah Xataface up to 2.x. Affected by this issue is the function testftp of the file install/install_form.js.php of the component Installer. The manipulation leads to cross site scripti…
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Low 3.5
University of Cambridge django-ucamlookup Lookup cross site scripting
** UNSUPPORTED WHEN ASSIGNED ** A vulnerability classified as problematic was found in University of Cambridge django-ucamlookup up to 1.9.1. Affected by this vulnerability is an unknown functionality of the component Lookup Handler. The manipulation leads to…
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Low 3.5
OSM Lab show-me-the-way site.js cross site scripting
A vulnerability was found in OSM Lab show-me-the-way. It has been rated as problematic. This issue affects some unknown processing of the file js/site.js. The manipulation leads to cross site scripting. The attack may be initiated remotely. The patch is named…
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Low 3.5
soerennb eXtplorer cross site scripting
A vulnerability has been found in soerennb eXtplorer up to 2.1.12 and classified as problematic. Affected by this vulnerability is an unknown functionality. The manipulation leads to cross site scripting. The attack can be launched remotely. Upgrading to vers…
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Low 3.5
kakwa LdapCherry URL cross site scripting
A vulnerability, which was classified as problematic, was found in kakwa LdapCherry up to 0.x. Affected is an unknown function of the component URL Handler. The manipulation leads to cross site scripting. It is possible to launch the attack remotely. Upgradin…
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Low 3.5
Kaltura mwEmbed DefaultSettings.php cross site scripting
A vulnerability was found in Kaltura mwEmbed up to 2.96.rc1 and classified as problematic. This issue affects some unknown processing of the file includes/DefaultSettings.php. The manipulation of the argument HTTP_X_FORWARDED_HOST leads to cross site scriptin…
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Low 2.4
fossology cross site scripting
A vulnerability has been found in fossology and classified as problematic. This vulnerability affects unknown code. The manipulation of the argument sql/VarValue leads to cross site scripting. The attack can be initiated remotely. The patch is identified as 8…
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Low 3.5
slackero phpwcms SVG File cross site scripting
A vulnerability was found in slackero phpwcms up to 1.9.26. It has been classified as problematic. This affects an unknown part of the component SVG File Handler. The manipulation leads to cross site scripting. It is possible to initiate the attack remotely. …
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Low 3.5
oxguy3 coebot-www channel.js showChannelBoir cross site scripting
A vulnerability was found in oxguy3 coebot-www and classified as problematic. This issue affects the function displayChannelCommands/displayChannelQuotes/displayChannelAutoreplies/showChannelHighlights/showChannelBoir of the file js/channel.js. The manipulati…
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Low 3.5
innologi appointments Extension Appointment cross site scripting
A vulnerability, which was classified as problematic, was found in innologi appointments Extension up to 2.0.5 on TYPO3. This affects an unknown part of the component Appointment Handler. The manipulation of the argument formfield leads to cross site scriptin…
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Low 3.5
kkokko NeoXplora Trainer cross site scripting
A vulnerability, which was classified as problematic, has been found in kkokko NeoXplora. Affected by this issue is some unknown functionality of the component Trainer Handler. The manipulation leads to cross site scripting. The attack may be launched remotel…
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Low 3.5
ahmyi RivetTracker cross site scripting
A vulnerability, which was classified as problematic, has been found in ahmyi RivetTracker. This issue affects some unknown processing. The manipulation of the argument $_SERVER['PHP_SELF'] leads to cross site scripting. The attack may be initiated remotely. …
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Low 3.5
ahmyi RivetTracker css.php changeColor cross site scripting
A vulnerability was found in ahmyi RivetTracker. It has been declared as problematic. Affected by this vulnerability is the function changeColor of the file css.php. The manipulation of the argument set_css leads to cross site scripting. The attack can be lau…
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Low 3.1
OpenDNS OpenResolve API endpoints.py get cross site scripting
A vulnerability was found in OpenDNS OpenResolve. It has been rated as problematic. Affected by this issue is the function get of the file resolverapi/endpoints.py of the component API. The manipulation leads to cross site scripting. The attack may be launche…
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Low 3.5
Jobs-Plugin cross site scripting
A vulnerability classified as problematic was found in Jobs-Plugin. Affected by this vulnerability is an unknown functionality. The manipulation leads to cross site scripting. The attack can be launched remotely. The identifier of the patch is b8a56718b1d4283…
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Low 3.5
82Flex WEIPDCRM cross site scripting
** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in 82Flex WEIPDCRM and classified as problematic. Affected by this issue is some unknown functionality. The manipulation leads to cross site scripting. The attack may be launched remotely. The name of …
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Low 3.5
stiiv contact_app View.php render cross site scripting
A vulnerability has been found in stiiv contact_app and classified as problematic. Affected by this vulnerability is the function render of the file libs/View.php. The manipulation of the argument var leads to cross site scripting. The attack can be launched …
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Low 2.4
dragonexpert Recent Threads on Index Setting hooks.php recentthread_list_threads cross site scripting
A vulnerability, which was classified as problematic, was found in dragonexpert Recent Threads on Index. Affected is the function recentthread_list_threads of the file inc/plugins/recentthreads/hooks.php of the component Setting Handler. The manipulation of t…
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Low 3.5
kirill2485 TekNet loggedin.php cross site scripting
A vulnerability was found in kirill2485 TekNet. It has been classified as problematic. Affected is an unknown function of the file pages/loggedin.php. The manipulation of the argument statusentery leads to cross site scripting. It is possible to launch the at…
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Low 3.5
admont28 Ingnovarq insertarSliderAjax.php cross site scripting
A vulnerability, which was classified as problematic, has been found in admont28 Ingnovarq. Affected by this issue is some unknown functionality of the file app/controller/insertarSliderAjax.php. The manipulation of the argument imagetitle leads to cross site…
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Low 3.1
SimpleSAMLphp simplesamlphp-module-openid OpenID consumer.php cross site scripting
** UNSUPPORTED WHEN ASSIGNED ** A vulnerability classified as problematic has been found in SimpleSAMLphp simplesamlphp-module-openid. Affected is an unknown function of the file templates/consumer.php of the component OpenID Handler. The manipulation of the …
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Low 3.5
Zenoss Dashboard defaultportlets.js cross site scripting
A vulnerability classified as problematic was found in Zenoss Dashboard up to 1.3.4. Affected by this vulnerability is an unknown functionality of the file ZenPacks/zenoss/Dashboard/browser/resources/js/defaultportlets.js. The manipulation of the argument HTM…
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Low 3.5
Yuna Scatari TBDev usersearch.php get_user_icons cross site scripting
A vulnerability has been found in Yuna Scatari TBDev up to 2.1.17 and classified as problematic. Affected by this vulnerability is the function get_user_icons of the file usersearch.php. The manipulation of the argument n/r/r2/em/ip/co/ma/d/d2/ul/ul2/ls/ls2/d…
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Low 3.5
rf Keynote rumble.rb cross site scripting
A vulnerability was found in rf Keynote up to 0.x on Rails. It has been rated as problematic. Affected by this issue is some unknown functionality of the file lib/keynote/rumble.rb. The manipulation of the argument value leads to cross site scripting. The att…
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Low 3.5
vova07 Yii2 FileAPI Widget UploadAction.php run cross site scripting
** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in vova07 Yii2 FileAPI Widget up to 0.1.8. It has been declared as problematic. Affected by this vulnerability is the function run of the file actions/UploadAction.php. The manipulation of the argument…
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Low 3.5
Sterc Google Analytics Dashboard for MODX Internal Search widget.analytics.tpl cross site scripting
A vulnerability was found in Sterc Google Analytics Dashboard for MODX up to 1.0.5. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file core/components/analyticsdashboardwidget/elements/tpl/widget.analyt…
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Low 2.6
aerouk imageserve cross site scripting
A vulnerability has been found in aerouk imageserve and classified as problematic. Affected by this vulnerability is an unknown functionality. The manipulation of the argument REQUEST_URI leads to cross site scripting. The attack can be launched remotely. The…
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Low 3.5
Joget User Profile Menu UserProfileMenu.java submitForm cross site scripting
A vulnerability, which was classified as problematic, has been found in Joget up to 7.0.33. This issue affects the function submitForm of the file wflow-core/src/main/java/org/joget/plugin/enterprise/UserProfileMenu.java of the component User Profile Menu. Th…
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Low 3.5
Chris92de AdminServ adminserv.php cross site scripting
** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in Chris92de AdminServ. It has been rated as problematic. This issue affects some unknown processing of the file resources/core/adminserv.php. The manipulation of the argument error leads to cross site…
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Low 3.5
Chris92de AdminServ adminserv.php cross site scripting
** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in Chris92de AdminServ. It has been declared as problematic. This vulnerability affects unknown code of the file resources/core/adminserv.php. The manipulation of the argument text leads to cross site …
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Low 3.5
w3c Unicorn ValidatorNuMessage.java ValidatorNuMessage cross site scripting
A vulnerability, which was classified as problematic, has been found in w3c Unicorn. This issue affects the function ValidatorNuMessage of the file src/org/w3c/unicorn/response/impl/ValidatorNuMessage.java. The manipulation of the argument message leads to cr…
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Low 2.4
FlatPress Setup main.lib.php cross site scripting
A vulnerability, which was classified as problematic, has been found in FlatPress. This issue affects some unknown processing of the file setup/lib/main.lib.php of the component Setup. The manipulation leads to cross site scripting. The attack may be initiate…
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Low 2.4
FlatPress XML File Handler/MD File admin.uploader.php onupload cross site scripting
A vulnerability classified as problematic was found in FlatPress. This vulnerability affects the function onupload of the file admin/panels/uploader/admin.uploader.php of the component XML File Handler/MD File Handler. The manipulation leads to cross site scr…
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Low 3.5
FlatPress Admin Area admin.entry.list.php cross site scripting
A vulnerability classified as problematic has been found in FlatPress. This affects an unknown part of the file admin/panels/entry/admin.entry.list.php of the component Admin Area. The manipulation leads to cross site scripting. It is possible to initiate the…
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Low 2.4
HotCRP cross site scripting
A vulnerability was found in HotCRP. It has been rated as problematic. Affected by this issue is some unknown functionality. The manipulation leads to cross site scripting. The attack may be launched remotely. The name of the patch is d4ffdb0ef806453c54ddca7f…
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Low 3.5
yolapi metadata.py render_description cross site scripting
A vulnerability, which was classified as problematic, was found in yolapi. Affected is the function render_description of the file yolapi/pypi/metadata.py. The manipulation of the argument text leads to cross site scripting. It is possible to launch the attac…
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Low 3.5
FarCry Solr Pro Plugin Search solrProSearch.cfc cross site scripting
A vulnerability was found in FarCry Solr Pro Plugin up to 1.5.x. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file packages/forms/solrProSearch.cfc of the component Search Handler. The manipulation of …
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Low 3.5
shred cilla Search search.jsp cross site scripting
A vulnerability was found in shred cilla. It has been classified as problematic. Affected is an unknown function of the file cilla-xample/src/main/webapp/WEB-INF/jsp/view/search.jsp of the component Search Handler. The manipulation of the argument details lea…