GHSA-MXM6-V9R6-R94C @nuxtjs/mdc's URL sanitizer misses SVG xlink:href and data:text/html, allowing XSS from untrusted markdown at the default configuration

Summary @nuxtjs/mdc renders untrusted markdown including raw HTML to a Vue component tree. Across two prior advisories it added a URL/attribute sanitizer to block dangerous links in that HTML: validateProps / validateProp and an unsafeLinkPrefix deny-list dist/runtime/parser/utils/props.js. The...

@nuxtjs/mdc's URL sanitizer misses SVG xlink:href and data:text/html, allowing XSS from untrusted markdown at the default configuration

Summary @nuxtjs/mdc renders untrusted markdown including raw HTML to a Vue component tree. Across two prior advisories it added a URL/attribute sanitizer to block dangerous links in that HTML: validateProps / validateProp and an unsafeLinkPrefix deny-list dist/runtime/parser/utils/props.js. The...

CVE-2026-63671

MDC is a tool to take regular Markdown and write documents interacting deeply with a Vue component. Prior to 0.22.1, @nuxtjs/mdc uses parseMarkdown with allowDangerousHtml enabled by default and relies on validateProps, validateProp, and unsafeLinkPrefix to remove executable URLs from untrusted...

CVE-2026-63671

@nuxtjs/mdc prior to 0.22.1 contains two gaps in its default URL sanitizer that enable cross-site scripting (XSS) from untrusted Markdown. First, validateProp checks only attributes named href or src, so an SVG xlink:href value (represented as xLinkHref) retains a javascript: URL that executes in...

EUVD-2026-80789

MDC is a tool to take regular Markdown and write documents interacting deeply with a Vue component. Prior to 0.22.1, @nuxtjs/mdc uses parseMarkdown with allowDangerousHtml enabled by default and relies on validateProps, validateProp, and unsafeLinkPrefix to remove executable URLs from untrusted...

CVE-2026-63671 @nuxtjs/mdc: the URL sanitizer misses SVG xlink:href and data:text/html, allowing XSS from untrusted markdown at the default configuration

MDC is a tool to take regular Markdown and write documents interacting deeply with a Vue component. Prior to 0.22.1, @nuxtjs/mdc uses parseMarkdown with allowDangerousHtml enabled by default and relies on validateProps, validateProp, and unsafeLinkPrefix to remove executable URLs from untrusted...

CVE-2026-63671 @nuxtjs/mdc: the URL sanitizer misses SVG xlink:href and data:text/html, allowing XSS from untrusted markdown at the default configuration

MDC is a tool to take regular Markdown and write documents interacting deeply with a Vue component. Prior to 0.22.1, @nuxtjs/mdc uses parseMarkdown with allowDangerousHtml enabled by default and relies on validateProps, validateProp, and unsafeLinkPrefix to remove executable URLs from untrusted...

CVE-2026-63671 @nuxtjs/mdc: the URL sanitizer misses SVG xlink:href and data:text/html, allowing XSS from untrusted markdown at the default configuration

MDC is a tool to take regular Markdown and write documents interacting deeply with a Vue component. Prior to 0.22.1, @nuxtjs/mdc uses parseMarkdown with allowDangerousHtml enabled by default and relies on validateProps, validateProp, and unsafeLinkPrefix to remove executable URLs from untrusted...

CVE-2026-63671: Improper Neutralization of Input During Web Page Generation

MDC is a tool to take regular Markdown and write documents interacting deeply with a Vue component. Prior to 0.22.1, @nuxtjs/mdc uses parseMarkdown with allowDangerousHtml enabled by default and relies on validateProps, validateProp, and unsafeLinkPrefix to remove executable URLs from untrusted...

CVE-2026-55661: Improper Neutralization of Input During Web Page Generation

Tina is a headless content management system. In versions prior to @tinacms/mdx 2.1.7 and tinacms 3.9.3, rich-text parsing and the default link/image renderers did not sanitize the url field on Slate link/image nodes. Content containing javascript: or data:text/html URLs — including case-variant,...

CVE-2026-52816: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Gogs is an open source self-hosted Git service. Prior to 0.14.3, the Jupyter Notebook ipynb sanitizer endpoint at POST /-/api/sanitizeipynb allows arbitrary data: URIs without proper restrictions, potentially leading to Cross-Site Scripting XSS. The endpoint uses bluemonday.UGCPolicy with...

CVE-2026-41692: Improper Neutralization of Input During Web Page Generation

i18nextify is a JavaScript library that adds website internationalization via a script tag, without source code changes. Versions prior to 4.0.8 substitute key interpolation tokens inside src and href attribute values with the raw string returned by i18next.t. The substitution logic in...

Cross-Site Scripting (XSS)

Firefox is vulnerable to cross-site scripting XSS. An origin confusion error may occur when reloading isolated data:text/html URLs. allowing an attacker to execute malicious scripts...

CVE-2017-5466

If a page is loaded from an original site through a hyperlink and contains a redirect to a "data:text/html" URL, triggering a reload will run the reloaded "data:text/html" page with its origin set incorrectly. This allows for a cross-site scripting XSS attack. This vulnerability affects Thunderbi...

CVE-2017-5466: Improper Neutralization of Input During Web Page Generation

If a page is loaded from an original site through a hyperlink and contains a redirect to a "data:text/html" URL, triggering a reload will run the reloaded "data:text/html" page with its origin set incorrectly. This allows for a cross-site scripting XSS attack. This vulnerability affects Thunderbi...

collegegrid.com XSS vulnerability

Vulnerable URL: https://collegegrid.com/redirectwebsite.asp?url=data:text/html;base64,PHNjcmlwdD5hbGVydCgvWFNTUE9TRUQvKTwvc2NyaXB0Pg==name=XSS Details: Description| Value ---|--- Patched:| No Latest check for patch:| 13.12.2017 Vulnerability type:| XSS Vulnerability status:| Publicly disclosed...

bbw-hochschule.de XSS vulnerability

Open Bug Bounty ID: OBB-279705 Description| Value ---|--- Affected Website:| bbw-hochschule.de Open Bug Bounty Program:| Create your bounty program now. It's open and free. Vulnerable Application:| Custom Code Vulnerability Type:| XSS Cross Site Scripting / CWE-79 CVSSv3 Score:| 6.1...

epex.eb.mil.br XSS vulnerability

Vulnerable URL: http://www.epex.eb.mil.br/images/publicacoes/RevistaNega/bookContent.swf?currentHTMLURL=data:text/html;base64,PHNjcmlwdD5hbGVydCgnT1BFTiBCVUdCT1VOVFknKTwvc2NyaXB0Pg== Details: Description| Value ---|--- Patched:| No Latest check for patch:| 11.08.2017 Vulnerability type:| XSS...

jet.gov.il XSS vulnerability

Vulnerable URL: http://jet.gov.il/media/pdf/bookContent.swf?currentHTMLURL=data:text/html;base64,PHNjcmlwdD5hbGVydCgnT1BFTiBCVUdCT1VOVFknKTwvc2NyaXB0Pg== Details: Description| Value ---|--- Patched:| No Latest check for patch:| 08.08.2017 Vulnerability type:| XSS Vulnerability status:| Publicly...

actsretirement.org XSS vulnerability

Vulnerable URL: https://www.actsretirement.org/staticcontent/flipbooks/financialsecurity/bookcontent.swf?currentHTMLURL=data:text/html;base64,PHNjcmlwdD5hbGVydCgnT1BFTiBCVUdCT1VOVFknKTwvc2NyaXB0Pg== Details: Description| Value ---|--- Patched:| No Latest check for patch:| 31.07.2017 Vulnerability...