CVE-2026-84292

A flaw was found in fast-uri. This component improperly serializes the port component of a Uniform Resource Identifier URI without validating its content. A remote attacker can exploit this by crafting a malicious port value that injects authority delimiters. This manipulation can demote the...

UBUNTU-CVE-2026-84292

fast-uri serializes the port component of a URI without validating it. When recomposing the authority, the userinfo and host components are escaped but the port is concatenated verbatim, so a port value that is not a sequence of digits can inject authority delimiters, demoting the intended host t...

PT-2026-84864

Name of the Vulnerable Software and Affected Versions fast-uri versions prior to 2.4.6 fast-uri versions 3.0.0 through 3.1.6 fast-uri versions 4.0.0 through 4.1.3 Description The software serializes the port component of a URI without proper validation. During the recomposition of the authority,...

CVE-2026-16221

A flaw was found in fast-uri. This vulnerability arises because fast-uri does not correctly interpret backslash characters as authority delimiters in Uniform Resource Locators URLs, unlike Node.js's native WHATWG URL parser. This discrepancy can cause applications that use fast-uri for security...

EUVD-2026-45551

fast-uri vulnerable to host confusion via literal backslash authority delimiter...

CVE-2026-6322

CVE-2026-6322 affects the fast-uri package. The vuln lies in normalize(): it decodes percent-encoded authority delimiters inside the host and then re-emits them as raw delimiters during serialization. This can cause a host, which combines an allowed domain, an encoded at-sign, and a different dom...