---
id: CVE-2026-54148
title: http4k is a functional toolkit for Kotlin HTTP applications
summary: >-
  http4k is a functional toolkit for Kotlin HTTP applications. Prior to
  4.51.0.0, 5.42.0.0, and 6.50.0.0, DigestAuthProvider.verify in
  http4k-security-digest does not compare the uri parameter in an Authorization:
  Digest response with the …
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-294
vendor: http4k
product: http4k
affected:
  - http4k < 4.51.0.0
  - 'http4k >= 5.0.0.0, < 5.42.0.0'
  - 'http4k >= 6.0.0.0, < 6.50.0.0'
patched:
  - 'org.http4k:http4k-security-digest 6.50.0.0'
  - 'org.http4k:http4k-security-digest 5.42.0.0'
published: '2026-09-18'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:25:27.050'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54148'
references:
  - url: 'https://github.com/github/advisory-database/pull/9477'
    label: security-advisories@github.com
  - url: >-
      https://github.com/http4k/http4k/commit/725f1b96978dd433348e2b149c1e72b9f5147c90
    label: security-advisories@github.com
  - url: 'https://github.com/http4k/http4k/releases/tag/6.50.0.0'
    label: security-advisories@github.com
  - url: 'https://github.com/http4k/http4k/security/advisories/GHSA-p28p-j94q-pg32'
    label: security-advisories@github.com
  - url: 'https://github.com/http4k/http4k/commit/725f1b9697'
  - url: 'https://github.com/advisories/GHSA-p28p-j94q-pg32'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54148'
tags:
  - nvd
  - cve.org
  - ghsa
  - maven
epss: 0.0058
epssPercentile: 0.45309
aliases:
  - GHSA-p28p-j94q-pg32
ecosystem: maven
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-22T14:53:41.032948Z'
ingestedAt: '2026-08-17T22:01:16.745Z'
---

## Overview

http4k is a functional toolkit for Kotlin HTTP applications. Prior to 4.51.0.0, 5.42.0.0, and 6.50.0.0, DigestAuthProvider.verify in http4k-security-digest does not compare the uri parameter in an Authorization: Digest response with the actual request URL. An attacker who captures a valid Digest authentication response can replay it against another URL served by the same realm, bypassing the per-request-URI binding and potentially gaining unauthorized read or write access. This issue is fixed in versions 4.51.0.0, 5.42.0.0, and 6.50.0.0.

## Remediation

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

## Package advisory (CVE-2026-54148)

Affected packages:

- `org.http4k:http4k-security-digest >= 6.0.0.0, < 6.50.0.0`
- `org.http4k:http4k-security-digest >= 5.0.0.0, < 5.42.0.0`
- `org.http4k:http4k-security-digest <= 4.48.2.0`

Patched in:

- `org.http4k:http4k-security-digest 6.50.0.0`
- `org.http4k:http4k-security-digest 5.42.0.0`

Source: https://github.com/advisories/GHSA-p28p-j94q-pg32