---
id: CVE-2026-69214
title: Http4s is a Scala interface for HTTP services
summary: >-
  Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47,
  The CookieJar client middleware stores a response cookie’s Domain attribute
  without checking that it domain-matches the host that supplied the cookie or
  rejec…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N'
cwe:
  - CWE-384
  - CWE-565
vendor: http4s
product: http4s
affected:
  - http4s < 0.23.35
  - 'http4s >= 1.0.0-M1, < 1.0.0-M47'
patched:
  - 'org.http4s:http4s-client_2.12 0.23.35'
  - 'org.http4s:http4s-client_2.13 0.23.35'
  - 'org.http4s:http4s-client_2.13 1.0.0-M47'
  - 'org.http4s:http4s-client_3 1.0.0-M47'
  - 'org.http4s:http4s-client_3 0.23.35'
published: '2026-09-15'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T20:39:16.610'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-69214'
references:
  - url: >-
      https://github.com/http4s/http4s/commit/87535f7288f3baaf6736e2735087e473762b5b2f
    label: security-advisories@github.com
  - url: 'https://github.com/http4s/http4s/releases/tag/v0.23.35'
    label: security-advisories@github.com
  - url: 'https://github.com/http4s/http4s/releases/tag/v1.0.0-M47'
    label: security-advisories@github.com
  - url: 'https://github.com/http4s/http4s/security/advisories/GHSA-wv64-j4fq-5f9x'
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-wv64-j4fq-5f9x'
tags:
  - nvd
  - cve.org
  - ghsa
  - maven
aliases:
  - GHSA-wv64-j4fq-5f9x
ecosystem: maven
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-16T18:18:28.078695Z'
ingestedAt: '2026-09-15T19:42:58.805Z'
epss: 0.00395
epssPercentile: 0.30839
---

## Overview

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, The CookieJar client middleware stores a response cookie’s Domain attribute without checking that it domain-matches the host that supplied the cookie or rejecting public suffixes. A malicious or compromised server contacted through the same CookieJar can plant a cookie for another domain, and the jar later sends that cookie to the victim domain, enabling session fixation or overwriting security-sensitive cookies. The patch validates the Set-Cookie domain against the response origin, although public-suffix rejection remains unimplemented. This issue is fixed in versions 0.23.35 and 1.0.0-M47.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-69214)

Affected packages:

- `org.http4s:http4s-client_2.12 <= 0.23.34`
- `org.http4s:http4s-client_2.13 <= 0.23.34`
- `org.http4s:http4s-client_2.13 >= 1.0.0-M1, <= 1.0.0-M46`
- `org.http4s:http4s-client_3 >= 1.0.0-M1, <= 1.0.0-M46`
- `org.http4s:http4s-client_3 <= 0.23.34`

Patched in:

- `org.http4s:http4s-client_2.12 0.23.35`
- `org.http4s:http4s-client_2.13 0.23.35`
- `org.http4s:http4s-client_2.13 1.0.0-M47`
- `org.http4s:http4s-client_3 1.0.0-M47`
- `org.http4s:http4s-client_3 0.23.35`

Source: https://github.com/advisories/GHSA-wv64-j4fq-5f9x