CVE-2026-6322 | BDVDB-2026-330447 Detail

Description#

fast-uri normalize() decoded percent-encoded authority delimiters inside the host component and then re-emitted them as raw delimiters during serialization. A host that combined an allowed domain, an encoded at-sign, and a different domain was re-emitted with the at-sign as a raw userinfo separator, changing the URI's authority to the second domain. Applications that normalize untrusted URLs before host allowlist checks, redirect validation, or outbound request routing can be steered to a different authority than the input appeared to specify. Versions <= 3.1.1 are affected. Update to 3.1.2 or later.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12026-05-05Record published in the CVE List.
2. Version 22026-09-10Most recent update recorded in the CVE List.