The Drupal.checkPlain function in Drupal 6.0 only escapes the first instance of a character in ECMAScript, which allows remote attackers to conduct cross-site scripting (XSS) attacks.

Drupal 5.x before 5.13 and 6.x before 6.7 does not delete all related content when an input format is deleted, which prevents the content from being properly filtered and allows remote attackers to conduct cross-site scripting (XSS) attacks via unspecified vectors.

Cross-site scripting (XSS) vulnerability in Refine by Taxonomy 5.x before 5.x-0.1, a module for Drupal, allows remote attackers to inject arbitrary web script or HTML via a taxonomy term, which is not properly handled by refine_by_taxo when displaying tags.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal GLightbox allows Cross-Site Scripting (XSS).This issue affects GLightbox: from 0.0.0 before 1.0.16.

Cross-site scripting (XSS) vulnerability in Drupal 8.x before 8.1.10 allows remote attackers to inject arbitrary web script or HTML via vectors involving an HTTP exception.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal oEmbed Providers allows Cross-Site Scripting (XSS).This issue affects oEmbed Providers: from 0.0.0 before 2.2.2.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal IFrame Remove Filter allows Cross-Site Scripting (XSS).This issue affects IFrame Remove Filter: from 2.0.0 before 2.0.5, from 7.X-1.0 through 7.X-1.5, from 1.0 through 1.2.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Block Class allows Cross-Site Scripting (XSS).This issue affects Block Class: from 4.0.0 before 4.0.1.

Cross-site scripting (XSS) vulnerability in the User Karma module 5.x before 5.x-1.13 and 6.x before 6.x-1.0-beta1, a module for Drupal, allows remote attackers to inject arbitrary web script or HTML via unspecified messages.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Colorbox allows Cross-Site Scripting (XSS).This issue affects Colorbox: from 0.0.0 before 2.1.3.

Cross-site scripting (XSS) vulnerability in the Answers module 5.x-1.x-dev and possibly other 5.x versions, a module for Drupal, allows remote attackers to inject arbitrary web script or HTML via a Simple Answer to a question.

Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal UI Icons allows Cross-Site Scripting (XSS).This issue affects UI Icons: from 0.0.0 before 1.0.1, from 1.1.0 before 1.1.1.

Cross-site scripting (XSS) vulnerability in EveryBlog 5.x and 6.x, a module for Drupal, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site scripting (XSS) vulnerability in Shindig-Integrator 5.x, a module for Drupal, allows remote authenticated users to inject arbitrary web script or HTML via unspecified vectors in generated pages.

Cross-site scripting (XSS) vulnerability in the stock quotes page in Stock 6.x before 6.x-1.0, a module for Drupal, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site scripting (XSS) vulnerability in the Greg Holsclaw Link to Us module 5.x before 5.x-1.1 for Drupal allows remote authenticated users to inject arbitrary web script or HTML via the "Link page header" field.

Cross-site scripting (XSS) vulnerability in the Suggested Terms module 5.x before 5.x-1.2 for Drupal allows remote authenticated users to inject arbitrary web script or HTML via crafted Taxonomy terms.

Cross-site scripting (XSS) vulnerability in the Mailsave module 5.x before 5.x-3.3 and 6.x before 6.x-1.3, a module for Drupal, allows remote attackers to inject arbitrary web script or HTML via an e-mail message with an attached file that has a modified Content-Type.

Cross-site scripting (XSS) vulnerability in the Taxonomy Image module 5.x before 5.x-1.3 and 6.x before 6.x-1.3, a module for Drupal, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Multiple cross-site scripting (XSS) vulnerabilities in the Aggregation module 5.x before 5.x-4.4 for Drupal allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.

The Drupal filter_xss_admin function in 5.x before 5.8 and 6.x before 6.3 does not "prevent use of the object HTML tag in administrator input," which has unknown impact and attack vectors, probably related to an insufficient cross-site scripting (XSS) protection mechanism.

Multiple cross-site scripting (XSS) vulnerabilities in Drupal 6.x before 6.3 allow remote attackers to inject arbitrary web script or HTML via vectors related to (1) free tagging taxonomy terms, which are not properly handled on node preview pages, and (2) unspecified OpenID values.

Multiple cross-site scripting (XSS) vulnerabilities in the Ubercart 5.x before 5.x-1.0-rc1 module for Drupal allow remote attackers to inject arbitrary web script or HTML via text fields intended for the (1) address and (2) order information, which are later displayed on the order view page and unspecified other administrative pages, a different vulnerability than CVE-2008-1428.

Multiple cross-site scripting (XSS) vulnerabilities in the Ubercart 5.x before 5.x-1.0-beta7 module for Drupal allow remote attackers to inject arbitrary web script or HTML via a text attribute value for a product.

Cross-site scripting (XSS) vulnerability in E-Publish 5.x before 5.x-1.1 and 6.x before 6.x-1.0 beta1, a Drupal module, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site scripting (XSS) vulnerability in the insertion filter in the Flickr Drupal module 5.x before 5.x-1.3 and 6.x before 6.x-1.0-alpha allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Multiple cross-site scripting (XSS) vulnerabilities in the Webform Drupal module 5.x before 5.x-1.10, 5.x-2.x before 5.x-2.0-beta3, and 6.x before 6.x-1.0-beta3 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Formatter Suite allows Cross-Site Scripting (XSS).This issue affects Formatter Suite: from 0.0.0 before 2.1.0.

Interpretation conflict in Drupal 4.7.x before 4.7.11 and 5.x before 5.6, when Internet Explorer 6 is used, allows remote attackers to conduct cross-site scripting (XSS) attacks via invalid UTF-8 byte sequences, which are not processed as UTF-8 by Drupal's HTML filtering, but are processed as UTF-8 by Internet Explorer, effectively removing characters from the document and defeating the HTML protection mechanism.

Cross-site scripting (XSS) vulnerability in the Workflow 4.7.x before 4.7.x-1.2 and 5.x before 5.x-1.2 module for Drupal allows remote attackers to inject arbitrary web script or HTML via unspecified vectors involving node properties.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal RapiDoc OAS Field Formatter allows Cross-Site Scripting (XSS).This issue affects RapiDoc OAS Field Formatter: from 0.0.0 before 1.0.1.

Cross-site scripting (XSS) vulnerability in the Project Issue Tracking module 5.x-2.x-dev before 20080130 in the 5.x-2.x series, 5.x-1.2 and earlier in the 5.x-1.x series, 4.7.x-2.6 and earlier in the 4.7.x-2.x series, and 4.7.x-1.6 and earlier in the 4.7.x-1.x series for Drupal allows remote authenticated users to inject arbitrary web script or HTML via unspecified vectors that write to summary table pages.

Cross-site scripting (XSS) vulnerability in the Devel module before 5.x-0.1 for Drupal allows remote attackers to inject arbitrary web script or HTML via a site variable, related to lack of escaping of the variable table.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal SpamSpan filter allows Cross-Site Scripting (XSS).This issue affects SpamSpan filter: from 0.0.0 before 3.2.1.

Cross-site scripting (XSS) vulnerability in the Archive 5.x before 5.x-1.8 module for Drupal allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Ignition Error Pages allows Cross-Site Scripting (XSS).This issue affects Ignition Error Pages: from 0.0.0 before 1.0.4.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Link field display mode formatter allows Cross-Site Scripting (XSS).This issue affects Link field display mode formatter: from 0.0.0 before 1.6.0.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Drupal core allows Cross-Site Scripting (XSS).This issue affects Drupal core: from 8.0.0 before 10.3.13, from 10.4.0 before 10.4.3, from 11.0.0 before 11.0.12, from 11.1.0 before 11.1.3.

The core Upload module in Drupal 4.7.x before 4.7.8 and 5.x before 5.3 places the .html extension on a whitelist, which allows remote attackers to conduct cross-site scripting (XSS) attacks by uploading .html files.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Drupal Core allows Cross-Site Scripting (XSS).This issue affects Drupal Core: from 7.0 before 7.102.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Klaro Cookie & Consent Management allows Cross-Site Scripting (XSS).This issue affects Klaro Cookie & Consent Management: from 0.0.0 before 3.0.5.

Multiple cross-site scripting (XSS) vulnerabilities in Drupal before 4.6.11, and 4.7 before 4.7.5, allow remote attackers to inject arbitrary web script or HTML via unspecified parameters in the (1) filter and (2) system modules. NOTE: some of these details are obtained from third party information.

Webform Multiple File Upload module for Drupal 7.x contains a cross-site scripting (XSS) vulnerability in the file name renderer. An unauthenticated attacker can exploit this vulnerability by uploading a file with a malicious filename containing JavaScript code (e.g., "<img src=1 onerror=alert(document.domain)>") to a Webform node with a Multifile field where file type validation is disabled. This allows the execution of arbitrary scripts in the context of the victim's browser. The issue is present in a third-party library and has been addressed in a patch available at  https://github.com/fyneworks/multifile/pull/44 . Users are advised to apply the provided patch or update to a fixed version of the module.

Cross-site scripting (XSS) vulnerability in the Zero Point theme 7.x-1.x before 7.x-1.9 for Drupal allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

A cross-site scripting (XSS) vulnerability in the HTML Data Processor in CKEditor 4 4.14.0 through 4.16.x before 4.16.1 allows remote attackers to inject executable JavaScript code through a crafted comment because --!> is mishandled.

A jQuery cross site scripting vulnerability is present when making Ajax requests to untrusted domains. This vulnerability is mitigated by the fact that it requires contributed or custom modules in order to exploit. For Drupal 8, this vulnerability was already fixed in Drupal 8.4.0 in the Drupal core upgrade to jQuery 3. For Drupal 7, it is fixed in the current release (Drupal 7.57) for jQuery 1.4.4 (the version that ships with Drupal 7 core) as well as for other newer versions of jQuery that might be used on the site, for example using the jQuery Update module.

Drupal 8.4.x versions before 8.4.5 and Drupal 7.x versions before 7.57 has a Drupal.checkPlain() JavaScript function which is used to escape potentially dangerous text before outputting it to HTML (as JavaScript output does not typically go through Twig autoescaping). This function does not correctly handle all methods of injecting malicious HTML, leading to a cross-site scripting vulnerability under certain circumstances. The PHP functions which Drupal provides for HTML escaping are not affected.

Multiple cross-site scripting (XSS) vulnerabilities in the "stand alone PHP application for the OSM Player," as used in the MediaFront module 6.x-1.x before 6.x-1.5 and 7.x-1.x before 7.x-1.5 for Drupal, allow remote attackers to inject arbitrary web script or HTML via (1) $_SERVER['HTTP_HOST'] or (2) $_SERVER['SCRIPT_NAME'] to players/osmplayer/player/OSMPlayer.php, (3) playlist parameter to players/osmplayer/player/getplaylist.php, and possibly other vectors related to $_SESSION.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Facets allows Cross-Site Scripting (XSS).This issue affects Facets: from 0.0.0 before 2.0.9.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal CivicTheme Design System allows Cross-Site Scripting (XSS).This issue affects CivicTheme Design System: from 0.0.0 before 1.12.0.