http4k: `DigestAuthProvider.verify` ignored configured algorithm and did not bind to request URI

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-54147
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-18 16:17:06 UTC
Updated2026-09-18 18:17:07 UTC
Descriptionhttp4k 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 ignores its configured algorithm parameter and verifies every Digest response with hardcoded MD5. Deployments configured for SHA-256 therefore receive weaker MD5-based verification, exposing Digest authentication to collision-related attack paths that depend on the hash function's collision resistance. This issue is fixed in versions 4.51.0.0, 5.42.0.0, and 6.50.0.0.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

EPSS: 0.001970000 probability, percentile 0.097310000 (date 2026-09-19)

Problem Types: CWE-327 | CWE-327 CWE-327: Use of a Broken or Risky Cryptographic Algorithm

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
3.1CNADECLARED6.5MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Http4k Http4k affected < 4.51.0.0 Not specified
CNA Http4k Http4k affected >= 5.0.0.0, < 5.42.0.0 Not specified
CNA Http4k Http4k affected >= 6.0.0.0, < 6.50.0.0 Not specified

References

ReferenceSourceLinkTags
github.com/http4k/http4k/commit/65d23d99fc5afbe34f29d8f61d0a003fbebb381c [email protected] github.com
github.com/http4k/http4k/releases/tag/6.50.0.0 [email protected] github.com
github.com/http4k/http4k/security/advisories/GHSA-vxxm-wwqh-mh47 [email protected] github.com
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