http4k: BasicCookieStorage` (renamed `InsecureCookieStorage`) did not enforce RFC 6265 cookie scoping; new `DefaultCookieStorage` is now the default
Impact
The previous BasicCookieStorage did not enforce RFC 6265 scoping rules around cookie domain, path, and Secure attribute. A client using a single storage instance to talk to multiple origins could have cookies leak across domains, or have Secure cookies sent over plain HTTP — the deprecation message states it bluntly: "BasicCookieStorage has no domain/path/scheme scoping and leaks cookies across origins. Use DefaultCookieStorage instead."
Who is affected: any client using BasicCookieStorage directly with cookies for more than one origin or scheme. Single-origin uses are unaffected.
Patches
| Line | Fixed in | Edition |
|---|---|---|
| v6.x (Community) | 6.48.0.0 | Community |
| v5.x (LTS) | 5.42.0.0 | Enterprise — contact enterprise@http4k.org |
| v4.x (LTS) | 4.51.0.0 | Enterprise — contact enterprise@http4k.org |
The fix introduces DefaultCookieStorage (RFC 6265 compliant) as the drop-in default; BasicCookieStorage is renamed InsecureCookieStorage and remains available for callers with a deliberate need for the old behaviour.
Workarounds
For deployments that cannot upgrade immediately:
- Use a dedicated
BasicCookieStorageinstance per origin / scheme, or - Switch to a separate RFC 6265-compliant cookie store implementation.
References
- Fix release: v6.48.0.0
- Cookie storage rewrite:
6a9b44d743 - Background: RFC 6265 — HTTP State Management Mechanism
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.http4k:http4k-core | >= 6.0.0.0, < 6.48.0.0, >= 5.0.0.0, < 5.42.0.0, < 4.51.0.0 | 6.48.0.0, 5.42.0.0, 4.51.0.0 |
References
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N- Weakness (CWE)
CWE-200- Platform
- Java / Kotlin (Maven)
- Package
org.http4k:http4k-core- Disclosed
- 19.06.2026
- Updated
- 11.10.2026 13:20
Sources and licenses
OSV / GitHub Advisory Database - GHSA-pr33-38xx-6r26 - CC BY 4.0
Vulnerability history: org.http4k:http4k-core
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 06.2026 08.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 2
- Medium 2
Disclosures per year
- 2026: 4
-
http4k: BasicCookieStorage` (renamed `InsecureCookieStorage`) did not enforce RFC 6265 cookie scoping; new `DefaultCookieStorage` is now the default this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.