CVE-2026-100725

Summary

http4k (Maven artifact org.http4k:http4k-core) before 6.48.0.0, 5.42.0.0, and 4.51.0.0 ships a BasicCookieStorage (client-side cookie store used by ClientFilters.Cookies) that does not enforce RFC 6265 scoping rules for the cookie domain, path, and Secure attributes. When a single BasicCookieStorage instance is used to talk to more than one origin or scheme, cookies stored for one origin can be sent to other origins, and cookies marked Secure can be sent over plain HTTP, potentially disclosing session cookies or other sensitive values to unauthorized hosts or network observers. Clients that use a storage instance for a single origin are not affected.

Affected Software

VendorProductVersion RangeStatus
http4khttp4k0 < 6.48.0.0affected
http4khttp4k6.48.0.0unaffected
http4khttp4k0 < 5.42.0.0affected
http4khttp4k5.42.0.0unaffected
http4khttp4k0 < 4.51.0.0affected
http4khttp4k4.51.0.0unaffected

Weaknesses

  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

References