If using affected versions to determine a URL's hostname, the hostname can be spoofed by using a backslash (\) character as part of the scheme delimiter, e.g. scheme:/\hostname. If the hostname is used in security decisions, the decision may be incorrect.
Depending on library usage and attacker intent, impacts may include allow/block list bypasses, SSRF attacks, open redirects, or other undesired behavior.
Example URL: https:/\expected-example.com/path
Escaped string: https:/\\expected-example.com/path (JavaScript strings must escape backslash)
Affected versions incorrectly return no hostname. Patched versions correctly return expected-example.com. Patched versions match the behavior of other parsers which implement the WHATWG URL specification, including web browsers and Node's built-in URL class.
Patches
Version 1.19.6 is patched against all known payload variants.
SECURITY fixing URI.parse() to rewrite \ in scheme delimiter to / as Node and Browsers do - disclosed privately by Yaniv Nizry from the CxSCA AppSec team at Checkmarx
SECURITY fixing URI.parse() to rewrite \ in scheme delimiter to / as Node and Browsers do - disclosed privately by Yaniv Nizry from the CxSCA AppSec team at Checkmarx
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Bumps urijs from 1.19.5 to 1.19.6. This update includes a security fix.
Vulnerabilities fixed
Sourced from The GitHub Security Advisory Database.
... (truncated)
Release notes
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Changelog
Sourced from urijs's changelog.
Commits
46c8ac0chore(build): bumping to version 1.19.6a1ad8bcfix(parse): treat backslash as forwardslash in scheme delimiterDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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