@braintree/sanitize-url

• Updates get-func-name to 2.0.2

• Dependencies
  • Update braces to 3.0.3

Improve sanitization of whitespace escapes

• Improve sanitization of HTML entities

• Move constant declarations from index file to constants.ts file

• Update to node v18

• Dev Dependency Updates

  • Update to TypeScript 5
  • Other minor dependency updates

• Add additional null byte sanitization prior to html decoding (#48)

• Add null check to beginning of sanitizeUrl function (#54)

• Fix issue where urls in the form https://example.com

/something were not properly sanitized

• Fix issue where urls in the form javascript:alert('xss'); were not properly sanitized
• Fix issue where urls in the form javasc	ript:alert('XSS'); were not properly sanitized

• BREAKING CHANGES
  • Decode HTML characters automatically that would result in an XSS vulnerability when rendering links via a server rendered HTML file

// decodes to javacript:alert('XSS')
const vulnerableUrl =
  "&#0000106&#0000097&#0000118&#0000097&#0000115&#0000099&#0000114&#0000105&#0000112&#0000116&#0000058&#0000097&#0000108&#0000101&#0000114&#0000116&#0000040&#0000039&#0000088&#0000083&#0000083&#0000039&#0000041";

sanitizeUrl(vulnerableUrl); // 'about:blank'

const okUrl = "https://example.com/" + vulnerableUrl;

// since the javascript bit is in the path instead of the protocol
// this is successfully sanitized
sanitizeUrl(okUrl); // 'https://example.com/javascript:alert('XSS');

• Fix issue where certain invisible white space characters were not being sanitized (#35)

• Fix issue where certain safe characters were being filtered out (#31 thanks @akirchmyer)

• BREAKING CHANGES
  • Sanitize vbscript urls (thanks @vicnicius)

• Fixup path to type declaration (closes #25)

• Add typescript types

• Fix issue where urls with accented characters were incorrectly sanitized

• BREAKING CHANGES
  • Protocol-less urls (ie: www.example.com) will be sanitised and passed on instead of sending out about:blank (Thanks @chawes13 #18)

• Trim whitespace from urls

• BREAKING CHANGES
  • Replace blank strings with about:blank
  • Replace null values with about:blank

• Allow relative urls to be sanitized

• Sanitize malicious URLs that begin with \s

• Sanitize malicious URLs that begin with %20

• sanitize data: urls

• sanitize javascript: urls