CVE-2026-100725 (GCVE-0-2026-100725)
Vulnerability from cvelistv5 – Published: 2026-09-27 01:28 – Updated: 2026-09-28 16:48
VLAI
EPSS
VEX
Title
http4k before 6.48.0.0 Cookie Scoping Bypass via BasicCookieStorage
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 16:47 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/http4k/http4k/security/advisor… | vendor-advisory |
| https://github.com/http4k/http4k/commit/6a9b44d743 | patch |
| https://www.vulncheck.com/advisories/http4k-befor… | third-party-advisory |
Impacted products
3 products
Date Public
2026-06-16 00:00
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